22633225 has 6 divisors (see below), whose sum is σ = 28065230. Its totient is φ = 18106560.

The previous prime is 22633223. The next prime is 22633241. The reversal of 22633225 is 52233622.

It can be written as a sum of positive squares in 3 ways, for example, as 13689 + 22619536 = 117^2 + 4756^2 .

It is not a de Polignac number, because 22633225 - 2¹ = 22633223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 905329 = 22633225 / (2 + 2 + 6 + 3 + 3 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 22633225.

It is not an unprimeable number, because it can be changed into a prime (22633223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452640 + ... + 452689.

Almost surely, 2^22633225 is an apocalyptic number.

22633225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22633225 is a deficient number, since it is larger than the sum of its proper divisors (5432005).

22633225 is an equidigital number, since it uses as much as digits as its factorization.

22633225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905339 (or 905334 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 22633225 is about 4757.4389118516. The cubic root of 22633225 is about 282.8669104128.

Adding to 22633225 its reverse (52233622), we get a palindrome (74866847).

The spelling of 22633225 in words is "twenty-two million, six hundred thirty-three thousand, two hundred twenty-five".