225222250212 has 72 divisors (see below), whose sum is σ = 570611164032. Its totient is φ = 74902924800.

The previous prime is 225222250171. The next prime is 225222250261. The reversal of 225222250212 is 212052222522.

225222250212 is a `hidden beast` number, since 225 + 2 + 2 + 225 + 0 + 212 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42645012 + ... + 42650292.

It is an arithmetic number, because the mean of its divisors is an integer number (7925155056).

Almost surely, 2^225222250212 is an apocalyptic number.

It is an amenable number.

225222250212 is an abundant number, since it is smaller than the sum of its proper divisors (345388913820).

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

225222250212 is a wasteful number, since it uses less digits than its factorization.

225222250212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769 (or 7764 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 225222250212 its reverse (212052222522), we get a palindrome (437274472734).

The spelling of 225222250212 in words is "two hundred twenty-five billion, two hundred twenty-two million, two hundred fifty thousand, two hundred twelve".