125538473979 has 12 divisors (see below), whose sum is σ = 183817370776. Its totient is φ = 82545845472.

The previous prime is 125538473969. The next prime is 125538473993. The reversal of 125538473979 is 979374835521.

125538473979 is a `hidden beast` number, since 1 + 2 + 5 + 538 + 4 + 7 + 3 + 97 + 9 = 666.

It is not a de Polignac number, because 125538473979 - 2²⁴ = 125521696763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125538473969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95538517 + ... + 95539830.

Almost surely, 2^125538473979 is an apocalyptic number.

125538473979 is a deficient number, since it is larger than the sum of its proper divisors (58278896797).

125538473979 is a wasteful number, since it uses less digits than its factorization.

125538473979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191078426 (or 191078423 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 63.

The spelling of 125538473979 in words is "one hundred twenty-five billion, five hundred thirty-eight million, four hundred seventy-three thousand, nine hundred seventy-nine".