125734202551 has 16 divisors (see below), whose sum is σ = 126935424000. Its totient is φ = 124540063648.

The previous prime is 125734202543. The next prime is 125734202591. The reversal of 125734202551 is 155202437521.

It is a cyclic number.

It is not a de Polignac number, because 125734202551 - 2³ = 125734202543 is a prime.

It is a super-2 number, since 2×125734202551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125734202551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125734202591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49441986 + ... + 49444528.

It is an arithmetic number, because the mean of its divisors is an integer number (7933464000).

Almost surely, 2^125734202551 is an apocalyptic number.

125734202551 is a deficient number, since it is larger than the sum of its proper divisors (1201221449).

125734202551 is a wasteful number, since it uses less digits than its factorization.

125734202551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758.

The product of its (nonzero) digits is 84000, while the sum is 37.

It can be divided in two parts, 12573 and 4202551, that added together give a palindrome (4215124).

The spelling of 125734202551 in words is "one hundred twenty-five billion, seven hundred thirty-four million, two hundred two thousand, five hundred fifty-one".