25953931 has 2 divisors, whose sum is σ = 25953932. Its totient is φ = 25953930.

The previous prime is 25953929. The next prime is 25953937. The reversal of 25953931 is 13935952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25953931 - 2¹ = 25953929 is a prime.

It is a super-2 number, since 2×25953931² = 1347213068705522, which contains 22 as substring.

Together with 25953929, it forms a pair of twin primes.

It is a Chen prime.

It is the 5095-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (25953937) by changing a digit.

It is a nontrivial repunit in base 5094.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976965 + 12976966.

It is an arithmetic number, because the mean of its divisors is an integer number (12976966).

Almost surely, 2^25953931 is an apocalyptic number.

25953931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25953931 is an equidigital number, since it uses as much as digits as its factorization.

25953931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 37.

The square root of 25953931 is about 5094.5000736088. The cubic root of 25953931 is about 296.0745300211.

The spelling of 25953931 in words is "twenty-five million, nine hundred fifty-three thousand, nine hundred thirty-one".