25727680 has 56 divisors (see below), whose sum is σ = 66842640. Its totient is φ = 9354240.

The previous prime is 25727671. The next prime is 25727701. The reversal of 25727680 is 8672752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 7174.

Almost surely, 2^25727680 is an apocalyptic number.

25727680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25727680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33421320).

25727680 is an abundant number, since it is smaller than the sum of its proper divisors (41114960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25727680 is a wasteful number, since it uses less digits than its factorization.

25727680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337 (or 7327 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 25727680 is about 5072.2460508142. The cubic root of 25727680 is about 295.2116837447.

The spelling of 25727680 in words is "twenty-five million, seven hundred twenty-seven thousand, six hundred eighty".