22425222 has 16 divisors (see below), whose sum is σ = 44983872. Its totient is φ = 7452840.

The previous prime is 22425211. The next prime is 22425223. The reversal of 22425222 is 22252422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304 + ... + 7467.

It is an arithmetic number, because the mean of its divisors is an integer number (2811492).

Almost surely, 2^22425222 is an apocalyptic number.

22425222 is an abundant number, since it is smaller than the sum of its proper divisors (22558650).

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

22425222 is a wasteful number, since it uses less digits than its factorization.

22425222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123.

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

The square root of 22425222 is about 4735.5276369165. The cubic root of 22425222 is about 281.9977113642.

Adding to 22425222 its reverse (22252422), we get a palindrome (44677644).

The spelling of 22425222 in words is "twenty-two million, four hundred twenty-five thousand, two hundred twenty-two".