138890423625 has 16 divisors (see below), whose sum is σ = 231113665536. Its totient is φ = 74074892400.

The previous prime is 138890423611. The next prime is 138890423627. The reversal of 138890423625 is 526324098831.

It is a happy number.

It is not a de Polignac number, because 138890423625 - 2⁸ = 138890423369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138890423627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185186857 + ... + 185187606.

It is an arithmetic number, because the mean of its divisors is an integer number (14444604096).

Almost surely, 2^138890423625 is an apocalyptic number.

138890423625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138890423625 is a deficient number, since it is larger than the sum of its proper divisors (92223241911).

138890423625 is an equidigital number, since it uses as much as digits as its factorization.

138890423625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370374481 (or 370374471 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 138890423625 in words is "one hundred thirty-eight billion, eight hundred ninety million, four hundred twenty-three thousand, six hundred twenty-five".