137756225 has 6 divisors (see below), whose sum is σ = 170817750. Its totient is φ = 110204960.

The previous prime is 137756207. The next prime is 137756231. The reversal of 137756225 is 522657731.

137756225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10608049 + 127148176 = 3257^2 + 11276^2 .

It is not a de Polignac number, because 137756225 - 2⁶ = 137756161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2755100 + ... + 2755149.

It is an arithmetic number, because the mean of its divisors is an integer number (28469625).

Almost surely, 2^137756225 is an apocalyptic number.

It is an amenable number.

137756225 is a deficient number, since it is larger than the sum of its proper divisors (33061525).

137756225 is an equidigital number, since it uses as much as digits as its factorization.

137756225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510259 (or 5510254 counting only the distinct ones).

The product of its digits is 88200, while the sum is 38.

The square root of 137756225 is about 11736.9597852255. The cubic root of 137756225 is about 516.4604599711.

The spelling of 137756225 in words is "one hundred thirty-seven million, seven hundred fifty-six thousand, two hundred twenty-five".