25632794871 has 16 divisors (see below), whose sum is σ = 40208306400. Its totient is φ = 16083321984.

The previous prime is 25632794857. The next prime is 25632794897. The reversal of 25632794871 is 17849723652.

It is a happy number.

25632794871 is a `hidden beast` number, since 2 + 563 + 2 + 7 + 9 + 4 + 8 + 71 = 666.

It is not a de Polignac number, because 25632794871 - 2⁶ = 25632794807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25632794821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27921976 + ... + 27922893.

It is an arithmetic number, because the mean of its divisors is an integer number (2513019150).

Almost surely, 2^25632794871 is an apocalyptic number.

25632794871 is a deficient number, since it is larger than the sum of its proper divisors (14575511529).

25632794871 is a wasteful number, since it uses less digits than its factorization.

25632794871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55844895 (or 55844889 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 25632794871 in words is "twenty-five billion, six hundred thirty-two million, seven hundred ninety-four thousand, eight hundred seventy-one".