125194975925 has 6 divisors (see below), whose sum is σ = 155241770178. Its totient is φ = 100155980720.

The previous prime is 125194975861. The next prime is 125194975943. The reversal of 125194975925 is 529579491521.

It can be written as a sum of positive squares in 3 ways, for example, as 3437945956 + 121757029969 = 58634^2 + 348937^2 .

It is not a de Polignac number, because 125194975925 - 2⁶ = 125194975861 is a prime.

It is a super-2 number, since 2×125194975925² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2503899494 + ... + 2503899543.

It is an arithmetic number, because the mean of its divisors is an integer number (25873628363).

Almost surely, 2^125194975925 is an apocalyptic number.

It is an amenable number.

125194975925 is a deficient number, since it is larger than the sum of its proper divisors (30046794253).

125194975925 is an equidigital number, since it uses as much as digits as its factorization.

125194975925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007799047 (or 5007799042 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 59.

The spelling of 125194975925 in words is "one hundred twenty-five billion, one hundred ninety-four million, nine hundred seventy-five thousand, nine hundred twenty-five".