25357231 has 2 divisors, whose sum is σ = 25357232. Its totient is φ = 25357230.

The previous prime is 25357187. The next prime is 25357237. The reversal of 25357231 is 13275352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25357231 - 2⁷ = 25357103 is a prime.

It is a super-2 number, since 2×25357231² = 1285978327974722, 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 25357231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25357237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12678615 + 12678616.

It is an arithmetic number, because the mean of its divisors is an integer number (12678616).

Almost surely, 2^25357231 is an apocalyptic number.

25357231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25357231 is an equidigital number, since it uses as much as digits as its factorization.

25357231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 28.

The square root of 25357231 is about 5035.5963897040. The cubic root of 25357231 is about 293.7879253282.

The spelling of 25357231 in words is "twenty-five million, three hundred fifty-seven thousand, two hundred thirty-one".