222289225 has 12 divisors (see below), whose sum is σ = 276049420. Its totient is φ = 177566400.

The previous prime is 222289219. The next prime is 222289247. The reversal of 222289225 is 522982222.

It can be written as a sum of positive squares in 6 ways, for example, as 4549689 + 217739536 = 2133^2 + 14756^2 .

It is not a de Polignac number, because 222289225 - 2⁷ = 222289097 is a prime.

It is a super-2 number, since 2×222289225² = 98824999102201250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 11455 + ... + 23995.

Almost surely, 2^222289225 is an apocalyptic number.

222289225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222289225 is a deficient number, since it is larger than the sum of its proper divisors (53760195).

222289225 is a wasteful number, since it uses less digits than its factorization.

222289225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260 (or 13255 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 222289225 is about 14909.3670221106. The cubic root of 222289225 is about 605.7677342237.

The spelling of 222289225 in words is "two hundred twenty-two million, two hundred eighty-nine thousand, two hundred twenty-five".