25531297 has 8 divisors (see below), whose sum is σ = 29490912. Its totient is φ = 21844800.

The previous prime is 25531283. The next prime is 25531301. The reversal of 25531297 is 79213552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25531297 - 2⁷ = 25531169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25531217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68079 + ... + 68452.

It is an arithmetic number, because the mean of its divisors is an integer number (3686364).

Almost surely, 2^25531297 is an apocalyptic number.

It is an amenable number.

25531297 is a deficient number, since it is larger than the sum of its proper divisors (3959615).

25531297 is a wasteful number, since it uses less digits than its factorization.

25531297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136559.

The product of its digits is 18900, while the sum is 34.

The square root of 25531297 is about 5052.8503836943. The cubic root of 25531297 is about 294.4586336688.

The spelling of 25531297 in words is "twenty-five million, five hundred thirty-one thousand, two hundred ninety-seven".