25131275 has 24 divisors (see below), whose sum is σ = 34216560. Its totient is φ = 18195840.

The previous prime is 25131263. The next prime is 25131299. The reversal of 25131275 is 57213152.

It is a de Polignac number, because none of the positive numbers 2^k-25131275 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16496 + ... + 17954.

It is an arithmetic number, because the mean of its divisors is an integer number (1425690).

Almost surely, 2^25131275 is an apocalyptic number.

25131275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25131275 is a deficient number, since it is larger than the sum of its proper divisors (9085285).

25131275 is a wasteful number, since it uses less digits than its factorization.

25131275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1530 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 25131275 is about 5013.1103119720. The cubic root of 25131275 is about 292.9126811753.

The spelling of 25131275 in words is "twenty-five million, one hundred thirty-one thousand, two hundred seventy-five".