25827526631 has 2 divisors, whose sum is σ = 25827526632. Its totient is φ = 25827526630.

The previous prime is 25827526591. The next prime is 25827526639. The reversal of 25827526631 is 13662572852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25827526631 is a prime.

It is a super-2 number, since 2×25827526631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25827526639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12913763315 + 12913763316.

It is an arithmetic number, because the mean of its divisors is an integer number (12913763316).

Almost surely, 2^25827526631 is an apocalyptic number.

25827526631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25827526631 is an equidigital number, since it uses as much as digits as its factorization.

25827526631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The spelling of 25827526631 in words is "twenty-five billion, eight hundred twenty-seven million, five hundred twenty-six thousand, six hundred thirty-one".