125138752525 has 12 divisors (see below), whose sum is σ = 157488056032. Its totient is φ = 98616806640.

The previous prime is 125138752523. The next prime is 125138752537. The reversal of 125138752525 is 525257831521.

It is a happy number.

It is not a de Polignac number, because 125138752525 - 2¹ = 125138752523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125138752523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37353177 + ... + 37356526.

Almost surely, 2^125138752525 is an apocalyptic number.

It is an amenable number.

125138752525 is a deficient number, since it is larger than the sum of its proper divisors (32349303507).

125138752525 is an equidigital number, since it uses as much as digits as its factorization.

125138752525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74709780 (or 74709775 counting only the distinct ones).

The product of its digits is 840000, while the sum is 46.

The spelling of 125138752525 in words is "one hundred twenty-five billion, one hundred thirty-eight million, seven hundred fifty-two thousand, five hundred twenty-five".