25964531 has 2 divisors, whose sum is σ = 25964532. Its totient is φ = 25964530.

The previous prime is 25964509. The next prime is 25964557. The reversal of 25964531 is 13546952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25964531 - 2¹⁰ = 25963507 is a prime.

It is a super-2 number, since 2×25964531² = 1348313740099922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25964491 and 25964500.

It is not a weakly prime, because it can be changed into another prime (25964501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12982265 + 12982266.

It is an arithmetic number, because the mean of its divisors is an integer number (12982266).

Almost surely, 2^25964531 is an apocalyptic number.

25964531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25964531 is an equidigital number, since it uses as much as digits as its factorization.

25964531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 25964531 is about 5095.5403050118. The cubic root of 25964531 is about 296.1148317241.

The spelling of 25964531 in words is "twenty-five million, nine hundred sixty-four thousand, five hundred thirty-one".