122591225 has 12 divisors (see below), whose sum is σ = 152153580. Its totient is φ = 97982400.

The previous prime is 122591221. The next prime is 122591239. The reversal of 122591225 is 522195221.

It can be written as a sum of positive squares in 6 ways, for example, as 90601 + 122500624 = 301^2 + 11068^2 .

It is not a de Polignac number, because 122591225 - 2² = 122591221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122591221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43355 + ... + 46095.

It is an arithmetic number, because the mean of its divisors is an integer number (12679465).

Almost surely, 2^122591225 is an apocalyptic number.

It is an amenable number.

122591225 is a deficient number, since it is larger than the sum of its proper divisors (29562355).

122591225 is a wasteful number, since it uses less digits than its factorization.

122591225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540 (or 4535 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 122591225 is about 11072.0921690528. The cubic root of 122591225 is about 496.7674462299.

The spelling of 122591225 in words is "one hundred twenty-two million, five hundred ninety-one thousand, two hundred twenty-five".