25310616864 has 96 divisors (see below), whose sum is σ = 71583120000. Its totient is φ = 7784404992.

The previous prime is 25310616857. The next prime is 25310616883. The reversal of 25310616864 is 46861601352.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×25310616864³ (a number of 32 digits) contains 333 as substring.

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, 5060637 + ... + 5065635.

It is an arithmetic number, because the mean of its divisors is an integer number (745657500).

Almost surely, 2^25310616864 is an apocalyptic number.

25310616864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25310616864 is an abundant number, since it is smaller than the sum of its proper divisors (46272503136).

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

25310616864 is a wasteful number, since it uses less digits than its factorization.

25310616864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082 (or 9074 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 25310616864 in words is "twenty-five billion, three hundred ten million, six hundred sixteen thousand, eight hundred sixty-four".