25087031 has 2 divisors, whose sum is σ = 25087032. Its totient is φ = 25087030.

The previous prime is 25087009. The next prime is 25087033. The reversal of 25087031 is 13078052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25087031 - 2²² = 20892727 is a prime.

It is a super-2 number, since 2×25087031² = 1258718248789922, which contains 22 as substring.

Together with 25087033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25087033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12543515 + 12543516.

It is an arithmetic number, because the mean of its divisors is an integer number (12543516).

Almost surely, 2^25087031 is an apocalyptic number.

25087031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25087031 is an equidigital number, since it uses as much as digits as its factorization.

25087031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 25087031 is about 5008.6955387606. The cubic root of 25087031 is about 292.7406877618.

The spelling of 25087031 in words is "twenty-five million, eighty-seven thousand, thirty-one".