138049625 has 16 divisors (see below), whose sum is σ = 196899456. Its totient is φ = 94662000.

The previous prime is 138049621. The next prime is 138049661. The reversal of 138049625 is 526940831.

It is a happy number.

It is not a de Polignac number, because 138049625 - 2² = 138049621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138049621) 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 15 ways as a sum of consecutive naturals, for example, 78011 + ... + 79760.

It is an arithmetic number, because the mean of its divisors is an integer number (12306216).

Almost surely, 2^138049625 is an apocalyptic number.

It is an amenable number.

138049625 is a deficient number, since it is larger than the sum of its proper divisors (58849831).

138049625 is an equidigital number, since it uses as much as digits as its factorization.

138049625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157793 (or 157783 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 138049625 is about 11749.4521148860. The cubic root of 138049625 is about 516.8268609516.

The spelling of 138049625 in words is "one hundred thirty-eight million, forty-nine thousand, six hundred twenty-five".