137225109 has 32 divisors (see below), whose sum is σ = 214824960. Its totient is φ = 76295232.

The previous prime is 137225093. The next prime is 137225113. The reversal of 137225109 is 901522731.

137225109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137225109 - 2⁴ = 137225093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137225909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154264 + ... + 155150.

It is an arithmetic number, because the mean of its divisors is an integer number (6713280).

Almost surely, 2^137225109 is an apocalyptic number.

It is an amenable number.

137225109 is a deficient number, since it is larger than the sum of its proper divisors (77599851).

137225109 is a wasteful number, since it uses less digits than its factorization.

137225109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 137225109 is about 11714.3121436984. The cubic root of 137225109 is about 515.7958712738.

The spelling of 137225109 in words is "one hundred thirty-seven million, two hundred twenty-five thousand, one hundred nine".