General fact: 4864 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 4864 is an uninteresting number.
Trivia: 4864 is an unremarkable number.
Historical date: April 25th is the day in 1707 that the Habsburg army is defeated by Bourbon army at Almansa (Spain) in the War of the Spanish Succession.