425

Millennium:	1st millennium
Centuries:	4th century 5th century 6th century
Decades:	400s 410s 420s 430s 440s
Years:	422 423 424 425 426 427 428

425 in various calendars

Gregorian calendar	425 CDXXV
Ab urbe condita	1178
Assyrian calendar	5175
Balinese saka calendar	346–347
Bengali calendar	−168
Berber calendar	1375
Buddhist calendar	969
Burmese calendar	−213
Byzantine calendar	5933–5934
Chinese calendar	甲子年 (Wood Rat) 3122 or 2915     — to — 乙丑年 (Wood Ox) 3123 or 2916
Coptic calendar	141–142
Discordian calendar	1591
Ethiopian calendar	417–418
Hebrew calendar	4185–4186
Hindu calendars
- Vikram Samvat	481–482
- Shaka Samvat	346–347
- Kali Yuga	3525–3526
Holocene calendar	10425
Iranian calendar	197 BP – 196 BP
Islamic calendar	203 BH – 202 BH
Javanese calendar	309–310
Julian calendar	425 CDXXV
Korean calendar	2758
Minguo calendar	1487 before ROC 民前1487年
Nanakshahi calendar	−1043
Seleucid era	736/737 AG
Thai solar calendar	967–968
Tibetan calendar	阳木鼠年 (male Wood-Rat) 551 or 170 or −602     — to — 阴木牛年 (female Wood-Ox) 552 or 171 or −601

Year 425 (CDXXV) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Theodosius and Valentinianus (or, less frequently, year 1178 Ab urbe condita). The denomination 425 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

Mausoleum of Galla Placidia (Ravenna)

By place

Roman Empire

• Roman civil war: Summer – Joannes, Roman usurper, is defeated at the fortified city of Ravenna and brought to Aquileia. After a humiliating parade on a donkey and the insults of the populace, he is executed.
• October 23 – Valentinian III, six-year-old son of Galla Placidia, is installed as emperor (Augustus) of the Western Roman Empire. Real power is in the hands of his mother who becomes a regent.
• Flavius Aetius leads a force of Huns (60,000 men) into Northern Italy. He reaches a compromise with Placidia, in return for obtaining the rank commander-in-chief (magister militum) in Gaul.
• The Huns advance unopposed on Constantinople, but are halted by a plague that decimates their hordes (see 433).

Israel

• The Sanhedrin is disbanded by the Roman Empire.

By topic

Arts and Sciences

• Last known usage of Demotic script in Egypt.
• c. 425–426 – Mausoleum of Galla Placidia is built.

Education

• February 27 – The University of Constantinople is founded by emperor Theodosius II at the urging of his wife Aelia Eudocia.

Religion

• Buddhism begins to spread to Southeast Asia.

Births

• Iamblichus, Syrian philosopher
• Zeno, Byzantine Emperor (approximate date)

Deaths

• November 5 – Atticus, archbishop of Constantinople
• Gamliel VI, last Nasi (head of the Sanhedrin)
• Helian Bobo, emperor of the Chinese Xiongnu state Xia (born 381)
• Joannes, Roman usurper
• Mavia, Arab warrior-queen
• Sulpicius Severus, Christian writer (approximate date)
• Yax Nuun Ayiin I 15th Ajaw of Tikal (approximate date)