138625195 has 4 divisors (see below), whose sum is σ = 166350240. Its totient is φ = 110900152.

The previous prime is 138625187. The next prime is 138625217. The reversal of 138625195 is 591526831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 591526831 = 7 ⋅84503833.

It is a cyclic number.

It is not a de Polignac number, because 138625195 - 2³ = 138625187 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13862515 + ... + 13862524.

It is an arithmetic number, because the mean of its divisors is an integer number (41587560).

Almost surely, 2^138625195 is an apocalyptic number.

138625195 is a deficient number, since it is larger than the sum of its proper divisors (27725045).

138625195 is an equidigital number, since it uses as much as digits as its factorization.

138625195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27725044.

The product of its digits is 64800, while the sum is 40.

The square root of 138625195 is about 11773.9201203338. The cubic root of 138625195 is about 517.5441334000.

The spelling of 138625195 in words is "one hundred thirty-eight million, six hundred twenty-five thousand, one hundred ninety-five".