Fatto generale: 25818 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 25818 is an uninteresting number.
Trivia: 25818 is a boring number.
Data storica: September 7th is the day in 1999 that a 5.9 magnitude earthquake rocks Athens, rupturing a previously unknown fault, killing 143, injuring more than 500, and leaving 50,000 people homeless.