22788225 has 18 divisors (see below), whose sum is σ = 40816646. Its totient is φ = 12153600.

The previous prime is 22788223. The next prime is 22788247. The reversal of 22788225 is 52288722.

It can be written as a sum of positive squares in 3 ways, for example, as 121104 + 22667121 = 348^2 + 4761^2 .

It is not a de Polignac number, because 22788225 - 2¹ = 22788223 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22788225.

It is not an unprimeable number, because it can be changed into a prime (22788221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50416 + ... + 50865.

Almost surely, 2^22788225 is an apocalyptic number.

22788225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22788225 is a deficient number, since it is larger than the sum of its proper divisors (18028421).

22788225 is a wasteful number, since it uses less digits than its factorization.

22788225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101297 (or 101289 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 22788225 is about 4773.7013940966. The cubic root of 22788225 is about 283.5111647946.

The spelling of 22788225 in words is "twenty-two million, seven hundred eighty-eight thousand, two hundred twenty-five".