25317263 has 2 divisors, whose sum is σ = 25317264. Its totient is φ = 25317262.

The previous prime is 25317247. The next prime is 25317269. The reversal of 25317263 is 36271352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25317263 - 2⁴ = 25317247 is a prime.

It is a super-2 number, since 2×25317263² = 1281927611622338, 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 (25317269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12658631 + 12658632.

It is an arithmetic number, because the mean of its divisors is an integer number (12658632).

Almost surely, 2^25317263 is an apocalyptic number.

25317263 is a deficient number, since it is larger than the sum of its proper divisors (1).

25317263 is an equidigital number, since it uses as much as digits as its factorization.

25317263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 29.

The square root of 25317263 is about 5031.6262778549. The cubic root of 25317263 is about 293.6334882434.

The spelling of 25317263 in words is "twenty-five million, three hundred seventeen thousand, two hundred sixty-three".