125362656631 has 4 divisors (see below), whose sum is σ = 125364416512. Its totient is φ = 125360896752.

The previous prime is 125362656607. The next prime is 125362656719. The reversal of 125362656631 is 136656263521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136656263521 = 29 ⋅4712284949.

It is a cyclic number.

It is not a de Polignac number, because 125362656631 - 2²³ = 125354268023 is a prime.

It is a super-2 number, since 2×125362656631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125362656031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768375 + ... + 917128.

It is an arithmetic number, because the mean of its divisors is an integer number (31341104128).

Almost surely, 2^125362656631 is an apocalyptic number.

125362656631 is a deficient number, since it is larger than the sum of its proper divisors (1759881).

125362656631 is an equidigital number, since it uses as much as digits as its factorization.

125362656631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759880.

The product of its digits is 1166400, while the sum is 46.

The spelling of 125362656631 in words is "one hundred twenty-five billion, three hundred sixty-two million, six hundred fifty-six thousand, six hundred thirty-one".