25287038975 has 24 divisors (see below), whose sum is σ = 34235027568. Its totient is φ = 18375219200.

The previous prime is 25287038941. The next prime is 25287038981. The reversal of 25287038975 is 57983078252.

It is not a de Polignac number, because 25287038975 - 2⁸ = 25287038719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25287038975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296897 + ... + 372453.

It is an arithmetic number, because the mean of its divisors is an integer number (1426459482).

Almost surely, 2^25287038975 is an apocalyptic number.

25287038975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25287038975 is a deficient number, since it is larger than the sum of its proper divisors (8947988593).

25287038975 is a wasteful number, since it uses less digits than its factorization.

25287038975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76795 (or 76790 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 25287038975 in words is "twenty-five billion, two hundred eighty-seven million, thirty-eight thousand, nine hundred seventy-five".