125810623631 has 8 divisors (see below), whose sum is σ = 156854803584. Its totient is φ = 98034252120.

The previous prime is 125810623619. The next prime is 125810623669. The reversal of 125810623631 is 136326018521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125810623631 - 2²² = 125806429327 is a prime.

It is a super-2 number, since 2×125810623631² (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 (125810623531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816952025 + ... + 816952178.

It is an arithmetic number, because the mean of its divisors is an integer number (19606850448).

Almost surely, 2^125810623631 is an apocalyptic number.

125810623631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125810623631 is a deficient number, since it is larger than the sum of its proper divisors (31044179953).

125810623631 is a wasteful number, since it uses less digits than its factorization.

125810623631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633904221.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 125810623631 in words is "one hundred twenty-five billion, eight hundred ten million, six hundred twenty-three thousand, six hundred thirty-one".