138925375 has 16 divisors (see below), whose sum is σ = 174507840. Its totient is φ = 110416800.

The previous prime is 138925307. The next prime is 138925379. The reversal of 138925375 is 573529831.

It is not a de Polignac number, because 138925375 - 2¹⁷ = 138794303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138925379) 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, 16086 + ... + 23164.

It is an arithmetic number, because the mean of its divisors is an integer number (10906740).

Almost surely, 2^138925375 is an apocalyptic number.

138925375 is a deficient number, since it is larger than the sum of its proper divisors (35582465).

138925375 is an equidigital number, since it uses as much as digits as its factorization.

138925375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7251 (or 7241 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 138925375 is about 11786.6608927211. The cubic root of 138925375 is about 517.9174286874.

The spelling of 138925375 in words is "one hundred thirty-eight million, nine hundred twenty-five thousand, three hundred seventy-five".