25655965320 has 32 divisors (see below), whose sum is σ = 76967896320. Its totient is φ = 6841590720.

The previous prime is 25655965261. The next prime is 25655965331. The reversal of 25655965320 is 2356955652.

It is a self number, because there is not a number n which added to its sum of digits gives 25655965320.

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, 106899736 + ... + 106899975.

It is an arithmetic number, because the mean of its divisors is an integer number (2405246760).

Almost surely, 2^25655965320 is an apocalyptic number.

25655965320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25655965320 is an abundant number, since it is smaller than the sum of its proper divisors (51311931000).

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

25655965320 is a wasteful number, since it uses less digits than its factorization.

25655965320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213799725 (or 213799721 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 25655965320 in words is "twenty-five billion, six hundred fifty-five million, nine hundred sixty-five thousand, three hundred twenty".