22443225 has 72 divisors (see below), whose sum is σ = 44782848. Its totient is φ = 9878400.

The previous prime is 22443139. The next prime is 22443229. The reversal of 22443225 is 52234422.

It is a happy number.

It is not a de Polignac number, because 22443225 - 2⁸ = 22442969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22443195 and 22443204.

It is not an unprimeable number, because it can be changed into a prime (22443229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 113827 + ... + 114023.

It is an arithmetic number, because the mean of its divisors is an integer number (621984).

Almost surely, 2^22443225 is an apocalyptic number.

22443225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22443225 is a deficient number, since it is larger than the sum of its proper divisors (22339623).

22443225 is a wasteful number, since it uses less digits than its factorization.

22443225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 243 counting only the distinct ones).

The product of its digits is 3840, while the sum is 24.

The square root of 22443225 is about 4737.4280997182. The cubic root of 22443225 is about 282.0731539001.

Adding to 22443225 its reverse (52234422), we get a palindrome (74677647).

The spelling of 22443225 in words is "twenty-two million, four hundred forty-three thousand, two hundred twenty-five".