125101561525 has 6 divisors (see below), whose sum is σ = 155125936322. Its totient is φ = 100081249200.

The previous prime is 125101561517. The next prime is 125101561577. The reversal of 125101561525 is 525165101521.

It can be written as a sum of positive squares in 3 ways, for example, as 43194555889 + 81907005636 = 207833^2 + 286194^2 .

It is not a de Polignac number, because 125101561525 - 2³ = 125101561517 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 2502031206 + ... + 2502031255.

Almost surely, 2^125101561525 is an apocalyptic number.

It is an amenable number.

125101561525 is a deficient number, since it is larger than the sum of its proper divisors (30024374797).

125101561525 is an equidigital number, since it uses as much as digits as its factorization.

125101561525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004062471 (or 5004062466 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 125101561525 in words is "one hundred twenty-five billion, one hundred one million, five hundred sixty-one thousand, five hundred twenty-five".