25695056531 has 2 divisors, whose sum is σ = 25695056532. Its totient is φ = 25695056530.

The previous prime is 25695056507. The next prime is 25695056537. The reversal of 25695056531 is 13565059652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25695056531 - 2²² = 25690862227 is a prime.

It is a super-2 number, since 2×25695056531² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25695056537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847528265 + 12847528266.

It is an arithmetic number, because the mean of its divisors is an integer number (12847528266).

Almost surely, 2^25695056531 is an apocalyptic number.

25695056531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25695056531 is an equidigital number, since it uses as much as digits as its factorization.

25695056531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215000, while the sum is 47.

The spelling of 25695056531 in words is "twenty-five billion, six hundred ninety-five million, fifty-six thousand, five hundred thirty-one".