25057231 has 2 divisors, whose sum is σ = 25057232. Its totient is φ = 25057230.

The previous prime is 25057223. The next prime is 25057237. The reversal of 25057231 is 13275052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25057231 - 2³ = 25057223 is a prime.

It is a super-2 number, since 2×25057231² = 1255729650774722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25057196 and 25057205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25057237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12528615 + 12528616.

It is an arithmetic number, because the mean of its divisors is an integer number (12528616).

Almost surely, 2^25057231 is an apocalyptic number.

25057231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25057231 is an equidigital number, since it uses as much as digits as its factorization.

25057231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 25057231 is about 5005.7198283564. The cubic root of 25057231 is about 292.6247297201.

The spelling of 25057231 in words is "twenty-five million, fifty-seven thousand, two hundred thirty-one".