12575565631 has 2 divisors, whose sum is σ = 12575565632. Its totient is φ = 12575565630.

The previous prime is 12575565623. The next prime is 12575565641. The reversal of 12575565631 is 13656557521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12575565631 - 2³ = 12575565623 is a prime.

It is a super-2 number, since 2×12575565631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12575565641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6287782815 + 6287782816.

It is an arithmetic number, because the mean of its divisors is an integer number (6287782816).

Almost surely, 2^12575565631 is an apocalyptic number.

12575565631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12575565631 is an equidigital number, since it uses as much as digits as its factorization.

12575565631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 945000, while the sum is 46.

The spelling of 12575565631 in words is "twelve billion, five hundred seventy-five million, five hundred sixty-five thousand, six hundred thirty-one".