25288931 has 2 divisors, whose sum is σ = 25288932. Its totient is φ = 25288930.

The previous prime is 25288919. The next prime is 25288951. The reversal of 25288931 is 13988252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25288931 - 2²² = 21094627 is a prime.

It is a super-2 number, since 2×25288931² = 1279060062245522, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (25288951) 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 as a sum of consecutive naturals, namely, 12644465 + 12644466.

It is an arithmetic number, because the mean of its divisors is an integer number (12644466).

Almost surely, 2^25288931 is an apocalyptic number.

25288931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25288931 is an equidigital number, since it uses as much as digits as its factorization.

25288931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 25288931 is about 5028.8100978263. The cubic root of 25288931 is about 293.5239144029.

The spelling of 25288931 in words is "twenty-five million, two hundred eighty-eight thousand, nine hundred thirty-one".