225117222 has 32 divisors (see below), whose sum is σ = 491733504. Its totient is φ = 68138400.

The previous prime is 225117197. The next prime is 225117229. The reversal of 225117222 is 222711522.

It is a junction number, because it is equal to n+sod(n) for n = 225117192 and 225117201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225117229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82947 + ... + 85617.

It is an arithmetic number, because the mean of its divisors is an integer number (15366672).

Almost surely, 2^225117222 is an apocalyptic number.

225117222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225117222 is an abundant number, since it is smaller than the sum of its proper divisors (266616282).

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

225117222 is a wasteful number, since it uses less digits than its factorization.

225117222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964.

The product of its digits is 1120, while the sum is 24.

The square root of 225117222 is about 15003.9068912067. The cubic root of 225117222 is about 608.3258060911.

Adding to 225117222 its reverse (222711522), we get a palindrome (447828744).

The spelling of 225117222 in words is "two hundred twenty-five million, one hundred seventeen thousand, two hundred twenty-two".