139275225 has 36 divisors (see below), whose sum is σ = 262594800. Its totient is φ = 70368480.

The previous prime is 139275221. The next prime is 139275229. The reversal of 139275225 is 522572931.

139275225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139275221) and next prime (139275229).

It is not a de Polignac number, because 139275225 - 2² = 139275221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139275225.

It is not an unprimeable number, because it can be changed into a prime (139275221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12015 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (7294300).

Almost surely, 2^139275225 is an apocalyptic number.

139275225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139275225 is a deficient number, since it is larger than the sum of its proper divisors (123319575).

139275225 is a wasteful number, since it uses less digits than its factorization.

139275225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32614 (or 32606 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 139275225 is about 11801.4924903590. The cubic root of 139275225 is about 518.3518142405.

The spelling of 139275225 in words is "one hundred thirty-nine million, two hundred seventy-five thousand, two hundred twenty-five".