25873931 has 2 divisors, whose sum is σ = 25873932. Its totient is φ = 25873930.

The previous prime is 25873927. The next prime is 25873937. The reversal of 25873931 is 13937852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25873931 - 2² = 25873927 is a prime.

It is a super-2 number, since 2×25873931² = 1338920610785522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25873937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12936965 + 12936966.

It is an arithmetic number, because the mean of its divisors is an integer number (12936966).

Almost surely, 2^25873931 is an apocalyptic number.

25873931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25873931 is an equidigital number, since it uses as much as digits as its factorization.

25873931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 25873931 is about 5086.6424092912. The cubic root of 25873931 is about 295.7700117245.

The spelling of 25873931 in words is "twenty-five million, eight hundred seventy-three thousand, nine hundred thirty-one".