25904231 has 2 divisors, whose sum is σ = 25904232. Its totient is φ = 25904230.

The previous prime is 25904213. The next prime is 25904237. The reversal of 25904231 is 13240952.

Together with previous prime (25904213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25904231 - 2¹⁸ = 25642087 is a prime.

It is a super-2 number, since 2×25904231² = 1342058367402722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25904231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25904237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12952115 + 12952116.

It is an arithmetic number, because the mean of its divisors is an integer number (12952116).

Almost surely, 2^25904231 is an apocalyptic number.

25904231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25904231 is an equidigital number, since it uses as much as digits as its factorization.

25904231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25904231 is about 5089.6199268708. The cubic root of 25904231 is about 295.8854217787.

The spelling of 25904231 in words is "twenty-five million, nine hundred four thousand, two hundred thirty-one".