138029925 has 24 divisors (see below), whose sum is σ = 248957280. Its totient is φ = 66923200.

The previous prime is 138029921. The next prime is 138029939. The reversal of 138029925 is 529920831.

It is not a de Polignac number, because 138029925 - 2² = 138029921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138029921) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 82830 + ... + 84479.

It is an arithmetic number, because the mean of its divisors is an integer number (10373220).

Almost surely, 2^138029925 is an apocalyptic number.

138029925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138029925 is a deficient number, since it is larger than the sum of its proper divisors (110927355).

138029925 is a wasteful number, since it uses less digits than its factorization.

138029925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167333 (or 167328 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 138029925 is about 11748.6137480130. The cubic root of 138029925 is about 516.8022756536.

The spelling of 138029925 in words is "one hundred thirty-eight million, twenty-nine thousand, nine hundred twenty-five".