125138875492 has 6 divisors (see below), whose sum is σ = 218993032118. Its totient is φ = 62569437744.

The previous prime is 125138875441. The next prime is 125138875523. The reversal of 125138875492 is 294578831521.

125138875492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117111790656 + 8027084836 = 342216^2 + 89594^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15642359433 + ... + 15642359440.

Almost surely, 2^125138875492 is an apocalyptic number.

It is an amenable number.

125138875492 is a deficient number, since it is larger than the sum of its proper divisors (93854156626).

125138875492 is a wasteful number, since it uses less digits than its factorization.

125138875492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31284718877 (or 31284718875 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 55.

The spelling of 125138875492 in words is "one hundred twenty-five billion, one hundred thirty-eight million, eight hundred seventy-five thousand, four hundred ninety-two".