22232225 has 6 divisors (see below), whose sum is σ = 27567990. Its totient is φ = 17785760.

The previous prime is 22232219. The next prime is 22232233. The reversal of 22232225 is 52223222.

It can be written as a sum of positive squares in 3 ways, for example, as 3500641 + 18731584 = 1871^2 + 4328^2 .

It is not a de Polignac number, because 22232225 - 2¹⁴ = 22215841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22232197 and 22232206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444620 + ... + 444669.

It is an arithmetic number, because the mean of its divisors is an integer number (4594665).

Almost surely, 2^22232225 is an apocalyptic number.

22232225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22232225 is a deficient number, since it is larger than the sum of its proper divisors (5335765).

22232225 is an equidigital number, since it uses as much as digits as its factorization.

22232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889299 (or 889294 counting only the distinct ones).

The product of its digits is 960, while the sum is 20.

The square root of 22232225 is about 4715.1060433462. The cubic root of 22232225 is about 281.1863987872.

Adding to 22232225 its reverse (52223222), we get a palindrome (74455447).

The spelling of 22232225 in words is "twenty-two million, two hundred thirty-two thousand, two hundred twenty-five".