| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 525 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 525 DXXV |
| Ab urbe condita | 1278 |
| Assyrian calendar | 5275 |
| Balinese saka calendar | 446–447 |
| Bengali calendar | −68 |
| Berber calendar | 1475 |
| Buddhist calendar | 1069 |
| Burmese calendar | −113 |
| Byzantine calendar | 6033–6034 |
| Chinese calendar | 甲辰年 (Wood Dragon) 3222 or 3015 — to — 乙巳年 (Wood Snake) 3223 or 3016 |
| Coptic calendar | 241–242 |
| Discordian calendar | 1691 |
| Ethiopian calendar | 517–518 |
| Hebrew calendar | 4285–4286 |
| Hindu calendars | |
| - Vikram Samvat | 581–582 |
| - Shaka Samvat | 446–447 |
| - Kali Yuga | 3625–3626 |
| Holocene calendar | 10525 |
| Iranian calendar | 97 BP – 96 BP |
| Islamic calendar | 100 BH – 99 BH |
| Javanese calendar | 412–413 |
| Julian calendar | 525 DXXV |
| Korean calendar | 2858 |
| Minguo calendar | 1387 before ROC 民前1387年 |
| Nanakshahi calendar | −943 |
| Seleucid era | 836/837 AG |
| Thai solar calendar | 1067–1068 |
| Tibetan calendar | 阳木龙年 (male Wood-Dragon) 651 or 270 or −502 — to — 阴木蛇年 (female Wood-Snake) 652 or 271 or −501 |
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Year 525 (DXXV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Probus and Philoxenus (or, less frequently, year 1278 Ab urbe condita). The denomination 525 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. In this year, the monk Dionysius Exiguus proposed a calendar starting with the birth of Jesus (the AD system), so this was the first time the year was designated AD. However, the system was not used in general until the reign of Charlemagne in the 9th century.