22225242 has 32 divisors (see below), whose sum is σ = 48460608. Its totient is φ = 6754176.

The previous prime is 22225211. The next prime is 22225277. The reversal of 22225242 is 24252222.

It is a super-2 number, since 2×22225242² = 987922763917128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4758 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1514394).

Almost surely, 2^22225242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22225242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24230304).

22225242 is an abundant number, since it is smaller than the sum of its proper divisors (26235366).

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

22225242 is a wasteful number, since it uses less digits than its factorization.

22225242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534.

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

The square root of 22225242 is about 4714.3654928315. The cubic root of 22225242 is about 281.1569560865.

Adding to 22225242 its reverse (24252222), we get a palindrome (46477464).

The spelling of 22225242 in words is "twenty-two million, two hundred twenty-five thousand, two hundred forty-two".