125840787584 has 16 divisors (see below), whose sum is σ = 250698444270. Its totient is φ = 62920393728.

The previous prime is 125840787577. The next prime is 125840787617. The reversal of 125840787584 is 485787048521.

It can be written as a sum of positive squares in only one way, i.e., 111507909184 + 14332878400 = 333928^2 + 119720^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×125840787584² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491565449 + ... + 491565704.

Almost surely, 2^125840787584 is an apocalyptic number.

It is an amenable number.

125840787584 is a deficient number, since it is larger than the sum of its proper divisors (124857656686).

125840787584 is an frugal number, since it uses more digits than its factorization.

125840787584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983131167 (or 983131155 counting only the distinct ones).

The product of its (nonzero) digits is 20070400, while the sum is 59.

The spelling of 125840787584 in words is "one hundred twenty-five billion, eight hundred forty million, seven hundred eighty-seven thousand, five hundred eighty-four".