225222210 has 48 divisors (see below), whose sum is σ = 611043264. Its totient is φ = 57447456.

The previous prime is 225222163. The next prime is 225222211. The reversal of 225222210 is 12222522.

225222210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (225222211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52332 + ... + 56471.

It is an arithmetic number, because the mean of its divisors is an integer number (12730068).

Almost surely, 2^225222210 is an apocalyptic number.

225222210 is an abundant number, since it is smaller than the sum of its proper divisors (385821054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225222210 is a wasteful number, since it uses less digits than its factorization.

225222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108839 (or 108836 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 225222210 is about 15007.4051721142. The cubic root of 225222210 is about 608.4203597687.

Adding to 225222210 its reverse (12222522), we get a palindrome (237444732).

The spelling of 225222210 in words is "two hundred twenty-five million, two hundred twenty-two thousand, two hundred ten".