138789625 has 32 divisors (see below), whose sum is σ = 187858944. Its totient is φ = 101764800.

The previous prime is 138789617. The next prime is 138789641. The reversal of 138789625 is 526987831.

It is not a de Polignac number, because 138789625 - 2³ = 138789617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362184 + ... + 362566.

It is an arithmetic number, because the mean of its divisors is an integer number (5870592).

Almost surely, 2^138789625 is an apocalyptic number.

It is an amenable number.

138789625 is a deficient number, since it is larger than the sum of its proper divisors (49069319).

138789625 is a wasteful number, since it uses less digits than its factorization.

138789625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 624 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 138789625 is about 11780.9008568955. The cubic root of 138789625 is about 517.7486805292.

The spelling of 138789625 in words is "one hundred thirty-eight million, seven hundred eighty-nine thousand, six hundred twenty-five".