225222492 has 96 divisors (see below), whose sum is σ = 591462144. Its totient is φ = 66124800.

The previous prime is 225222461. The next prime is 225222499. The reversal of 225222492 is 294222522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225222499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 668148 + ... + 668484.

It is an arithmetic number, because the mean of its divisors is an integer number (6161064).

Almost surely, 2^225222492 is an apocalyptic number.

225222492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225222492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295731072).

225222492 is an abundant number, since it is smaller than the sum of its proper divisors (366239652).

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

225222492 is a wasteful number, since it uses less digits than its factorization.

225222492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 497 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 225222492 is about 15007.4145674730. The cubic root of 225222492 is about 608.4206137024.

Adding to 225222492 its sum of digits (30), we get a palindrome (225222522).

The spelling of 225222492 in words is "two hundred twenty-five million, two hundred twenty-two thousand, four hundred ninety-two".