Traditional date of the defeat of Bel by Hayk, progenitor and founder of the Armenian nation.

The 25th century BC comprises the years from 2500 BC to 2401 BC.

Bêl is a title signifying 'lord' or 'master' applied to various gods in the Mesopotamian religion of Akkad, Assyria, and Babylonia. The feminine form is Bêlit in Akkadian. Bel is represented in Greek as Belos and in Latin as Belus. Belit appears in Greek form as Beltis (Βελτις). Linguistically, Bel is an East Semitic form cognate with the Northwest Semitic Baal with the same meaning.

Hayk, also known as Hayk Nahapet, is the legendary patriarch and founder of the Armenian nation. He is a central figure in Armenian mythology and national identity, and is traditionally regarded as the eponymous ancestor from whom the Armenian people, the "Hay", derive their name. His tale is recounted in the History of Armenia attributed to the 5th-century historian Movses Khorenatsi, as well as in the Primary History attributed to Sebeos. Additional fragments of his legend survive in other medieval sources and continue to be echoed in Armenian oral tradition and epic poetry.

Armenians are an ethnic group indigenous to the Armenian highlands of West Asia. Armenians constitute the main demographic group in Armenia and constituted the main population of the breakaway Republic of Artsakh until their subsequent flight due to the 2023 Azerbaijani offensive. There is a large diaspora of around five million people of Armenian ancestry living outside the Republic of Armenia. The largest Armenian populations exist in Russia, the United States, France, Georgia, Iran, Germany, Ukraine, Lebanon, Brazil, Argentina, Syria, and Turkey. The present-day Armenian diaspora was formed mainly as a result of the Armenian genocide with the exceptions of Iran, former Soviet states, and parts of the Levant.