222644225 has 12 divisors (see below), whose sum is σ = 276660864. Its totient is φ = 177739920.

The previous prime is 222644203. The next prime is 222644237. The reversal of 222644225 is 522446222.

It is not a de Polignac number, because 222644225 - 2⁶ = 222644161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3032 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (23055072).

Almost surely, 2^222644225 is an apocalyptic number.

222644225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222644225 is a deficient number, since it is larger than the sum of its proper divisors (54016639).

222644225 is a wasteful number, since it uses less digits than its factorization.

222644225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18784 (or 18779 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 222644225 is about 14921.2675399914. The cubic root of 222644225 is about 606.0900367987.

The spelling of 222644225 in words is "two hundred twenty-two million, six hundred forty-four thousand, two hundred twenty-five".