25170939 has 8 divisors (see below), whose sum is σ = 37290320. Its totient is φ = 16780608.

The previous prime is 25170923. The next prime is 25170961. The reversal of 25170939 is 93907152.

It is not a de Polignac number, because 25170939 - 2⁴ = 25170923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25120939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466102 + ... + 466155.

It is an arithmetic number, because the mean of its divisors is an integer number (4661290).

Almost surely, 2^25170939 is an apocalyptic number.

25170939 is a deficient number, since it is larger than the sum of its proper divisors (12119381).

25170939 is an equidigital number, since it uses as much as digits as its factorization.

25170939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932266 (or 932260 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 25170939 is about 5017.0647793306. The cubic root of 25170939 is about 293.0666988521.

The spelling of 25170939 in words is "twenty-five million, one hundred seventy thousand, nine hundred thirty-nine".