25898231 has 2 divisors, whose sum is σ = 25898232. Its totient is φ = 25898230.

The previous prime is 25898219. The next prime is 25898239. The reversal of 25898231 is 13289852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25898231 - 2⁶ = 25898167 is a prime.

It is a super-2 number, since 2×25898231² = 1341436737858722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25898239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949115 + 12949116.

It is an arithmetic number, because the mean of its divisors is an integer number (12949116).

Almost surely, 2^25898231 is an apocalyptic number.

25898231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25898231 is an equidigital number, since it uses as much as digits as its factorization.

25898231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 25898231 is about 5089.0304577591. The cubic root of 25898231 is about 295.8625754515.

It can be divided in two parts, 258 and 98231, that added together give a palindrome (98489).

The spelling of 25898231 in words is "twenty-five million, eight hundred ninety-eight thousand, two hundred thirty-one".