138834225 has 36 divisors (see below), whose sum is σ = 249872896. Its totient is φ = 73686240.

The previous prime is 138834217. The next prime is 138834239. The reversal of 138834225 is 522438831.

It is not a de Polignac number, because 138834225 - 2³ = 138834217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138834225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48792 + ... + 51558.

Almost surely, 2^138834225 is an apocalyptic number.

138834225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138834225 is a deficient number, since it is larger than the sum of its proper divisors (111038671).

138834225 is a wasteful number, since it uses less digits than its factorization.

138834225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006 (or 2998 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 138834225 is about 11782.7935991428. The cubic root of 138834225 is about 517.8041340453.

The spelling of 138834225 in words is "one hundred thirty-eight million, eight hundred thirty-four thousand, two hundred twenty-five".