33222225 has 12 divisors (see below), whose sum is σ = 54927536. Its totient is φ = 17718480.

The previous prime is 33222223. The next prime is 33222239. The reversal of 33222225 is 52222233.

It is not a de Polignac number, because 33222225 - 2¹ = 33222223 is a prime.

It is a super-2 number, since 2×33222225² = 2207432467901250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33222223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221407 + ... + 221556.

Almost surely, 2^33222225 is an apocalyptic number.

It is an amenable number.

33222225 is a deficient number, since it is larger than the sum of its proper divisors (21705311).

33222225 is a wasteful number, since it uses less digits than its factorization.

33222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442976 (or 442971 counting only the distinct ones).

The product of its digits is 1440, while the sum is 21.

The square root of 33222225 is about 5763.8723962281. The cubic root of 33222225 is about 321.4718171091.

Adding to 33222225 its reverse (52222233), we get a palindrome (85444458).

The spelling of 33222225 in words is "thirty-three million, two hundred twenty-two thousand, two hundred twenty-five".