125498723956 has 24 divisors (see below), whose sum is σ = 224563021704. Its totient is φ = 61346288640.

The previous prime is 125498723953. The next prime is 125498723963. The reversal of 125498723956 is 659327894521.

It can be written as a sum of positive squares in 4 ways, for example, as 36831751056 + 88666972900 = 191916^2 + 297770^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125498723894 and 125498723903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125498723951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993765 + ... + 1112908.

It is an arithmetic number, because the mean of its divisors is an integer number (9356792571).

Almost surely, 2^125498723956 is an apocalyptic number.

It is an amenable number.

125498723956 is a deficient number, since it is larger than the sum of its proper divisors (99064297748).

125498723956 is a wasteful number, since it uses less digits than its factorization.

125498723956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107011 (or 2107009 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 61.

The spelling of 125498723956 in words is "one hundred twenty-five billion, four hundred ninety-eight million, seven hundred twenty-three thousand, nine hundred fifty-six".