125807833636 has 9 divisors (see below), whose sum is σ = 220164950299. Its totient is φ = 62903562124.

The previous prime is 125807833633. The next prime is 125807833643. The reversal of 125807833636 is 636338708521.

The square root of 125807833636 is 354694.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×125807833636² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125807833633) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 620715 + ... + 798061.

Almost surely, 2^125807833636 is an apocalyptic number.

125807833636 is the 354694-th square number.

It is an amenable number.

125807833636 is a deficient number, since it is larger than the sum of its proper divisors (94357116663).

125807833636 is an frugal number, since it uses more digits than its factorization.

125807833636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354698 (or 177349 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 125807833636 in words is "one hundred twenty-five billion, eight hundred seven million, eight hundred thirty-three thousand, six hundred thirty-six".