25653507500 has 60 divisors (see below), whose sum is σ = 57908913216. Its totient is φ = 9930360000.

The previous prime is 25653507499. The next prime is 25653507511. The reversal of 25653507500 is 570535652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 88007 + ... + 243006.

Almost surely, 2^25653507500 is an apocalyptic number.

25653507500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25653507500 is an abundant number, since it is smaller than the sum of its proper divisors (32255405716).

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

25653507500 is a wasteful number, since it uses less digits than its factorization.

25653507500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331068 (or 331051 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 38.

The spelling of 25653507500 in words is "twenty-five billion, six hundred fifty-three million, five hundred seven thousand, five hundred".