138750125 has 16 divisors (see below), whose sum is σ = 174330624. Its totient is φ = 110250000.

The previous prime is 138750077. The next prime is 138750127. The reversal of 138750125 is 521057831.

It is not a de Polignac number, because 138750125 - 2¹⁰ = 138749101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138750091 and 138750100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138750127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15200 + ... + 22550.

It is an arithmetic number, because the mean of its divisors is an integer number (10895664).

Almost surely, 2^138750125 is an apocalyptic number.

It is an amenable number.

138750125 is a deficient number, since it is larger than the sum of its proper divisors (35580499).

138750125 is an equidigital number, since it uses as much as digits as its factorization.

138750125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 138750125 is about 11779.2242953431. The cubic root of 138750125 is about 517.6995581894.

The spelling of 138750125 in words is "one hundred thirty-eight million, seven hundred fifty thousand, one hundred twenty-five".