25964491 has 16 divisors (see below), whose sum is σ = 32273856. Its totient is φ = 20376576.

The previous prime is 25964473. The next prime is 25964501. The reversal of 25964491 is 19446952.

It is a cyclic number.

It is not a de Polignac number, because 25964491 - 2⁵ = 25964459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25964441) 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, 1455 + ... + 7351.

It is an arithmetic number, because the mean of its divisors is an integer number (2017116).

Almost surely, 2^25964491 is an apocalyptic number.

25964491 is a deficient number, since it is larger than the sum of its proper divisors (6309365).

25964491 is a wasteful number, since it uses less digits than its factorization.

25964491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5958.

The product of its digits is 77760, while the sum is 40.

The square root of 25964491 is about 5095.5363800095. The cubic root of 25964491 is about 296.1146796629.

The spelling of 25964491 in words is "twenty-five million, nine hundred sixty-four thousand, four hundred ninety-one".