125428056500 has 48 divisors (see below), whose sum is σ = 274037386896. Its totient is φ = 50152448000.

The previous prime is 125428056493. The next prime is 125428056527. The reversal of 125428056500 is 5650824521.

It can be written as a sum of positive squares in 8 ways, for example, as 3490210084 + 121937846416 = 59078^2 + 349196^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330940 + ... + 1422060.

It is an arithmetic number, because the mean of its divisors is an integer number (5709112227).

Almost surely, 2^125428056500 is an apocalyptic number.

125428056500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125428056500 is an abundant number, since it is smaller than the sum of its proper divisors (148609330396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125428056500 is a wasteful number, since it uses less digits than its factorization.

125428056500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93893 (or 93881 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 125428056500 in words is "one hundred twenty-five billion, four hundred twenty-eight million, fifty-six thousand, five hundred".