222225420 has 96 divisors (see below), whose sum is σ = 636088320. Its totient is φ = 57957120.

The previous prime is 222225413. The next prime is 222225431. The reversal of 222225420 is 24522222.

222225420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 819885 + ... + 820155.

It is an arithmetic number, because the mean of its divisors is an integer number (6625920).

Almost surely, 2^222225420 is an apocalyptic number.

222225420 is a gapful number since it is divisible by the number (20) 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 222225420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318044160).

222225420 is an abundant number, since it is smaller than the sum of its proper divisors (413862900).

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

222225420 is a wasteful number, since it uses less digits than its factorization.

222225420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222225420 is about 14907.2271063401. The cubic root of 222225420 is about 605.7097696374.

Adding to 222225420 its reverse (24522222), we get a palindrome (246747642).

The spelling of 222225420 in words is "two hundred twenty-two million, two hundred twenty-five thousand, four hundred twenty".