25864880 has 40 divisors (see below), whose sum is σ = 62754912. Its totient is φ = 9895424.

The previous prime is 25864859. The next prime is 25864921. The reversal of 25864880 is 8846852.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5189 + ... + 8868.

Almost surely, 2^25864880 is an apocalyptic number.

25864880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25864880 is an abundant number, since it is smaller than the sum of its proper divisors (36890032).

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

25864880 is a wasteful number, since it uses less digits than its factorization.

25864880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14093 (or 14087 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 25864880 is about 5085.7526483304. The cubic root of 25864880 is about 295.7355197798.

The spelling of 25864880 in words is "twenty-five million, eight hundred sixty-four thousand, eight hundred eighty".