222939225 has 18 divisors (see below), whose sum is σ = 399309326. Its totient is φ = 118900800.

The previous prime is 222939221. The next prime is 222939251. The reversal of 222939225 is 522939222.

It can be written as a sum of positive squares in 3 ways, for example, as 44235801 + 178703424 = 6651^2 + 13368^2 .

It is not a de Polignac number, because 222939225 - 2² = 222939221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222939225.

It is not an unprimeable number, because it can be changed into a prime (222939221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 495196 + ... + 495645.

Almost surely, 2^222939225 is an apocalyptic number.

222939225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222939225 is a deficient number, since it is larger than the sum of its proper divisors (176370101).

222939225 is a wasteful number, since it uses less digits than its factorization.

222939225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990857 (or 990849 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 222939225 is about 14931.1494868948. The cubic root of 222939225 is about 606.3576051602.

The spelling of 222939225 in words is "two hundred twenty-two million, nine hundred thirty-nine thousand, two hundred twenty-five".