25439315 has 16 divisors (see below), whose sum is σ = 33683040. Its totient is φ = 18289920.

The previous prime is 25439303. The next prime is 25439321. The reversal of 25439315 is 51393452.

It is not a de Polignac number, because 25439315 - 2⁸ = 25439059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2297 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (2105190).

Almost surely, 2^25439315 is an apocalyptic number.

25439315 is a deficient number, since it is larger than the sum of its proper divisors (8243725).

25439315 is a wasteful number, since it uses less digits than its factorization.

25439315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302.

The product of its digits is 16200, while the sum is 32.

The square root of 25439315 is about 5043.7401796683. The cubic root of 25439315 is about 294.1045912597.

The spelling of 25439315 in words is "twenty-five million, four hundred thirty-nine thousand, three hundred fifteen".