222402225 has 12 divisors (see below), whose sum is σ = 367705136. Its totient is φ = 118614480.

The previous prime is 222402221. The next prime is 222402233. The reversal of 222402225 is 522204222.

It is not a de Polignac number, because 222402225 - 2² = 222402221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222402221) 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 11 ways as a sum of consecutive naturals, for example, 1482607 + ... + 1482756.

Almost surely, 2^222402225 is an apocalyptic number.

222402225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222402225 is a deficient number, since it is larger than the sum of its proper divisors (145302911).

222402225 is a wasteful number, since it uses less digits than its factorization.

222402225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965376 (or 2965371 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222402225 is about 14913.1561045944. The cubic root of 222402225 is about 605.8703635170.

Adding to 222402225 its reverse (522204222), we get a palindrome (744606447).

The spelling of 222402225 in words is "two hundred twenty-two million, four hundred two thousand, two hundred twenty-five".