125165556601975 has 24 divisors (see below), whose sum is σ = 161978370926112. Its totient is φ = 95764061184000.

The previous prime is 125165556601937. The next prime is 125165556601993. The reversal of 125165556601975 is 579106655561521.

It is not a de Polignac number, because 125165556601975 - 2¹¹ = 125165556599927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13092426 + ... + 20536375.

It is an arithmetic number, because the mean of its divisors is an integer number (6749098788588).

Almost surely, 2^{125165556601975} is an apocalyptic number.

125165556601975 is a deficient number, since it is larger than the sum of its proper divisors (36812814324137).

125165556601975 is a wasteful number, since it uses less digits than its factorization.

125165556601975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33635307 (or 33635302 counting only the distinct ones).

The product of its (nonzero) digits is 85050000, while the sum is 64.

The spelling of 125165556601975 in words is "one hundred twenty-five trillion, one hundred sixty-five billion, five hundred fifty-six million, six hundred one thousand, nine hundred seventy-five".