125550157477988 has 6 divisors (see below), whose sum is σ = 219712775586486. Its totient is φ = 62775078738992.

The previous prime is 125550157477961. The next prime is 125550157478093. The reversal of 125550157477988 is 889774751055521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69208289999104 + 56341867478884 = 8319152^2 + 7506122^2 .

It is a super-2 number, since 2×125550157477988² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15693769684745 + ... + 15693769684752.

It is an arithmetic number, because the mean of its divisors is an integer number (36618795931081).

Almost surely, 2^{125550157477988} is an apocalyptic number.

It is an amenable number.

125550157477988 is a deficient number, since it is larger than the sum of its proper divisors (94162618108498).

125550157477988 is a wasteful number, since it uses less digits than its factorization.

125550157477988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31387539369501 (or 31387539369499 counting only the distinct ones).

The product of its (nonzero) digits is 987840000, while the sum is 74.

The spelling of 125550157477988 in words is "one hundred twenty-five trillion, five hundred fifty billion, one hundred fifty-seven million, four hundred seventy-seven thousand, nine hundred eighty-eight".