25660051263 has 64 divisors (see below), whose sum is σ = 48676285440. Its totient is φ = 12969590400.

The previous prime is 25660051231. The next prime is 25660051271. The reversal of 25660051263 is 36215006652.

It is a happy number.

25660051263 is a `hidden beast` number, since 25 + 6 + 60 + 0 + 512 + 63 = 666.

It is not a de Polignac number, because 25660051263 - 2⁵ = 25660051231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660051273) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89868 + ... + 243713.

It is an arithmetic number, because the mean of its divisors is an integer number (760566960).

Almost surely, 2^25660051263 is an apocalyptic number.

25660051263 is a deficient number, since it is larger than the sum of its proper divisors (23016234177).

25660051263 is a wasteful number, since it uses less digits than its factorization.

25660051263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333645 (or 333639 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 25660051263 in words is "twenty-five billion, six hundred sixty million, fifty-one thousand, two hundred sixty-three".