125811199612 has 48 divisors (see below), whose sum is σ = 260346078720. Its totient is φ = 52050398400.

The previous prime is 125811199573. The next prime is 125811199637. The reversal of 125811199612 is 216991118521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6153687 + ... + 6174097.

It is an arithmetic number, because the mean of its divisors is an integer number (5423876640).

Almost surely, 2^125811199612 is an apocalyptic number.

It is an amenable number.

125811199612 is an abundant number, since it is smaller than the sum of its proper divisors (134534879108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125811199612 is a wasteful number, since it uses less digits than its factorization.

125811199612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28042 (or 28040 counting only the distinct ones).

The product of its digits is 77760, while the sum is 46.

The spelling of 125811199612 in words is "one hundred twenty-five billion, eight hundred eleven million, one hundred ninety-nine thousand, six hundred twelve".