25531916 has 12 divisors (see below), whose sum is σ = 45413760. Its totient is φ = 12556560.

The previous prime is 25531903. The next prime is 25531927. The reversal of 25531916 is 61913552.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52076 + ... + 52563.

It is an arithmetic number, because the mean of its divisors is an integer number (3784480).

Almost surely, 2^25531916 is an apocalyptic number.

It is an amenable number.

25531916 is a deficient number, since it is larger than the sum of its proper divisors (19881844).

25531916 is a wasteful number, since it uses less digits than its factorization.

25531916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104704 (or 104702 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 25531916 is about 5052.9116358789. The cubic root of 25531916 is about 294.4610133418.

The spelling of 25531916 in words is "twenty-five million, five hundred thirty-one thousand, nine hundred sixteen".