25321012560 has 80 divisors (see below), whose sum is σ = 87216828480. Its totient is φ = 6752269440.

The previous prime is 25321012543. The next prime is 25321012579. The reversal of 25321012560 is 6521012352.

It is a happy number.

25321012560 is a `hidden beast` number, since 2 + 532 + 1 + 0 + 125 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5859186 + ... + 5863505.

It is an arithmetic number, because the mean of its divisors is an integer number (1090210356).

Almost surely, 2^25321012560 is an apocalyptic number.

25321012560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25321012560 is an abundant number, since it is smaller than the sum of its proper divisors (61895815920).

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

25321012560 is a wasteful number, since it uses less digits than its factorization.

25321012560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11722713 (or 11722701 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 25321012560 in words is "twenty-five billion, three hundred twenty-one million, twelve thousand, five hundred sixty".