25953987952 has 10 divisors (see below), whose sum is σ = 50285851688. Its totient is φ = 12976993968.

The previous prime is 25953987919. The next prime is 25953987971. The reversal of 25953987952 is 25978935952.

It is a super-2 number, since 2×25953987952² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811062108 + ... + 811062139.

Almost surely, 2^25953987952 is an apocalyptic number.

It is an amenable number.

25953987952 is a deficient number, since it is larger than the sum of its proper divisors (24331863736).

25953987952 is a wasteful number, since it uses less digits than its factorization.

25953987952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622124255 (or 1622124249 counting only the distinct ones).

The product of its digits is 61236000, while the sum is 64.

The spelling of 25953987952 in words is "twenty-five billion, nine hundred fifty-three million, nine hundred eighty-seven thousand, nine hundred fifty-two".