22133225 has 12 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 17134800.

The previous prime is 22133203. The next prime is 22133263. The reversal of 22133225 is 52233122.

It is not a de Polignac number, because 22133225 - 2¹⁴ = 22116841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22133197 and 22133206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13505 + ... + 15054.

It is an arithmetic number, because the mean of its divisors is an integer number (2360960).

Almost surely, 2^22133225 is an apocalyptic number.

22133225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22133225 is a deficient number, since it is larger than the sum of its proper divisors (6198295).

22133225 is a wasteful number, since it uses less digits than its factorization.

22133225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600 (or 28595 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 22133225 is about 4704.5961569512. The cubic root of 22133225 is about 280.7684037968.

Adding to 22133225 its reverse (52233122), we get a palindrome (74366347).

The spelling of 22133225 in words is "twenty-two million, one hundred thirty-three thousand, two hundred twenty-five".