25317297 has 24 divisors (see below), whose sum is σ = 38158848. Its totient is φ = 16156800.

The previous prime is 25317293. The next prime is 25317337. The reversal of 25317297 is 79271352.

It is not a de Polignac number, because 25317297 - 2² = 25317293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25317293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28297 + ... + 29177.

It is an arithmetic number, because the mean of its divisors is an integer number (1589952).

Almost surely, 2^25317297 is an apocalyptic number.

It is an amenable number.

25317297 is a deficient number, since it is larger than the sum of its proper divisors (12841551).

25317297 is a wasteful number, since it uses less digits than its factorization.

25317297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1018 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 25317297 is about 5031.6296564831. The cubic root of 25317297 is about 293.6336196890.

The spelling of 25317297 in words is "twenty-five million, three hundred seventeen thousand, two hundred ninety-seven".