138763751525 has 12 divisors (see below), whose sum is σ = 196648059552. Its totient is φ = 95152286640.

The previous prime is 138763751491. The next prime is 138763751543. The reversal of 138763751525 is 525157367831.

It is not a de Polignac number, because 138763751525 - 2⁶ = 138763751461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396467687 + ... + 396468036.

It is an arithmetic number, because the mean of its divisors is an integer number (16387338296).

Almost surely, 2^138763751525 is an apocalyptic number.

It is an amenable number.

138763751525 is a deficient number, since it is larger than the sum of its proper divisors (57884308027).

138763751525 is an equidigital number, since it uses as much as digits as its factorization.

138763751525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792935740 (or 792935735 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 53.

The spelling of 138763751525 in words is "one hundred thirty-eight billion, seven hundred sixty-three million, seven hundred fifty-one thousand, five hundred twenty-five".