125512005125 has 32 divisors (see below), whose sum is σ = 178611005664. Its totient is φ = 87233664000.

The previous prime is 125512005089. The next prime is 125512005167. The reversal of 125512005125 is 521500215521.

It can be written as a sum of positive squares in 16 ways, for example, as 120925194049 + 4586811076 = 347743^2 + 67726^2 .

It is not a de Polignac number, because 125512005125 - 2²² = 125507810821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2244086 + ... + 2299335.

It is an arithmetic number, because the mean of its divisors is an integer number (5581593927).

Almost surely, 2^125512005125 is an apocalyptic number.

It is an amenable number.

125512005125 is a deficient number, since it is larger than the sum of its proper divisors (53099000539).

125512005125 is a wasteful number, since it uses less digits than its factorization.

125512005125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543466 (or 4543456 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 125512005125 in words is "one hundred twenty-five billion, five hundred twelve million, five thousand, one hundred twenty-five".