25590931 has 2 divisors, whose sum is σ = 25590932. Its totient is φ = 25590930.

The previous prime is 25590919. The next prime is 25590949. The reversal of 25590931 is 13909552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25590931 - 2¹¹ = 25588883 is a prime.

It is a super-2 number, since 2×25590931² = 1309791498893522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25590431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12795465 + 12795466.

It is an arithmetic number, because the mean of its divisors is an integer number (12795466).

Almost surely, 2^25590931 is an apocalyptic number.

25590931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25590931 is an equidigital number, since it uses as much as digits as its factorization.

25590931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 25590931 is about 5058.7479676299. The cubic root of 25590931 is about 294.6877131957.

The spelling of 25590931 in words is "twenty-five million, five hundred ninety thousand, nine hundred thirty-one".