Hecho general: 25 is the number of points needed to win a set in volleyball under rally scoring rules.
Hecho matemático: 25 is the smallest aspiring number — a composite non-sociable number whose aliquot sequence does not terminate.
Trivia: 25 is the (critical) number of Florida electoral votes for the 2000 U.S. presidential election.
Fecha histórica: January 25th is the day in 1348 that a strong earthquake strikes the South Alpine region of Friuli in modern Italy, causing considerable damage to buildings as far away as Rome.