138625355 has 16 divisors (see below), whose sum is σ = 183665664. Its totient is φ = 99600480.

The previous prime is 138625351. The next prime is 138625373. The reversal of 138625355 is 553526831.

It is not a de Polignac number, because 138625355 - 2² = 138625351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138625351) 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, 10619 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (11479104).

Almost surely, 2^138625355 is an apocalyptic number.

138625355 is a deficient number, since it is larger than the sum of its proper divisors (45040309).

138625355 is a wasteful number, since it uses less digits than its factorization.

138625355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30466.

The product of its digits is 108000, while the sum is 38.

The square root of 138625355 is about 11773.9269150101. The cubic root of 138625355 is about 517.5443325149.

The spelling of 138625355 in words is "one hundred thirty-eight million, six hundred twenty-five thousand, three hundred fifty-five".