125138751250 has 20 divisors (see below), whose sum is σ = 234560077686. Its totient is φ = 50055500000.

The previous prime is 125138751223. The next prime is 125138751263. The reversal of 125138751250 is 52157831521.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 27279729 + 125111471521 = 5223^2 + 353711^2 .

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 50054251 + ... + 50056750.

Almost surely, 2^125138751250 is an apocalyptic number.

125138751250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125138751250 is a deficient number, since it is larger than the sum of its proper divisors (109421326436).

125138751250 is an equidigital number, since it uses as much as digits as its factorization.

125138751250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100111023 (or 100111008 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 125138751250 in words is "one hundred twenty-five billion, one hundred thirty-eight million, seven hundred fifty-one thousand, two hundred fifty".