January 25 is the twenty-fifth day of the year in the Gregorian calendar. 340 days (341 in leap years) remain in the year after this day.
750 - Abbasid rebels defeat the Umayyad Caliphate in the Battle of Zaba, leading to a change of dynasty.
1533 - Anna Bohlen, who was already pregnant with the future Queen Elizabeth, secretly marries King Henry VIII of England.
1831 - Polish Parliament (Sejm) declares Poland's independence and overthrows Russian Tsar Nicholas I from the Polish throne. A large part of the Duchy of Warsaw, called the Kingdom of Poland, was annexed by Russia in 1815, and the Russian Tsar also became King of Poland. In September, the Russians quelled the Polish uprising, the constitution was repealed and the Sejm was dissolved.
1874 - Sima Lozanić became a full professor at the Department of Chemistry and Chemical Technology at the Great School in Serbia.
1899 - Serbian revolutionary and publicist Vasa Pelagić, one of the first supporters of the idea of socialism in Serbia and the Balkans, dies in Požarevac Prison. He was a prolific and popular writer, and works published during his lifetime were printed in 250,000 copies.
1904 - The daily Politika begins to appear in Belgrade.
1916 - The Montenegrin army capitulates in the First World War, which was de facto the end of the Kingdom of Montenegro.
1924 - The first Winter Olympics open in the French city of Chamonix.
1942 - Thailand declares war on Britain and the United States during World War II.
1961 - US President John F. Kennedy holds the first live press conference at the State Department in Washington. Kennedy answered 31 questions.
1971 - A military coup overthrows Ugandan President Milton Obote and declares him president.
1983 - Chinese authorities commute Mao Zedong's widow, Diang Qin, to life in prison.
1987 - A fire breaks out in the factory of the Agrokomerc food factory, which was the reason for the beginning of the Agrokomerc affair.
1991 - The Macedonian Parliament adopts a declaration of independence and a platform for negotiations on Yugoslavia's future.
1996 - A parliamentary assembly of the Council of Europe accepts Russia as a member, despite harsh criticism of Russia's military involvement in Chechnya.