222305225 has 12 divisors (see below), whose sum is σ = 290167440. Its totient is φ = 168483600.

The previous prime is 222305219. The next prime is 222305269. The reversal of 222305225 is 522503222.

It is a happy number.

It is not a de Polignac number, because 222305225 - 2¹⁴ = 222288841 is a prime.

It is a super-2 number, since 2×222305225² = 98839226124601250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222305225.

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, 233531 + ... + 234480.

It is an arithmetic number, because the mean of its divisors is an integer number (24180620).

Almost surely, 2^222305225 is an apocalyptic number.

222305225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222305225 is a deficient number, since it is larger than the sum of its proper divisors (67862215).

222305225 is a wasteful number, since it uses less digits than its factorization.

222305225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468040 (or 468035 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 222305225 is about 14909.9035878841. The cubic root of 222305225 is about 605.7822679185.

Adding to 222305225 its reverse (522503222), we get a palindrome (744808447).

The spelling of 222305225 in words is "two hundred twenty-two million, three hundred five thousand, two hundred twenty-five".