25400939368 has 64 divisors (see below), whose sum is σ = 57659696640. Its totient is φ = 10240902144.

The previous prime is 25400939327. The next prime is 25400939383. The reversal of 25400939368 is 86393900452.

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, 2543521 + ... + 2553487.

It is an arithmetic number, because the mean of its divisors is an integer number (900932760).

Almost surely, 2^25400939368 is an apocalyptic number.

25400939368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25400939368 is an abundant number, since it is smaller than the sum of its proper divisors (32258757272).

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

25400939368 is a wasteful number, since it uses less digits than its factorization.

25400939368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674 (or 12670 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 25400939368 in words is "twenty-five billion, four hundred million, nine hundred thirty-nine thousand, three hundred sixty-eight".