125196778612 has 24 divisors (see below), whose sum is σ = 222552326304. Its totient is φ = 61611978912.

The previous prime is 125196778547. The next prime is 125196778621. The reversal of 125196778612 is 216877691521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121338 + ... + 514894.

It is an arithmetic number, because the mean of its divisors is an integer number (9273013596).

Almost surely, 2^125196778612 is an apocalyptic number.

It is an amenable number.

125196778612 is a deficient number, since it is larger than the sum of its proper divisors (97355547692).

125196778612 is a wasteful number, since it uses less digits than its factorization.

125196778612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394815 (or 394813 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 55.

The spelling of 125196778612 in words is "one hundred twenty-five billion, one hundred ninety-six million, seven hundred seventy-eight thousand, six hundred twelve".