33321225 has 36 divisors (see below), whose sum is σ = 64092624. Its totient is φ = 15230880.

The previous prime is 33321199. The next prime is 33321229. The reversal of 33321225 is 52212333.

It is not a de Polignac number, because 33321225 - 2⁹ = 33320713 is a prime.

It is a super-2 number, since 2×33321225² = 2220608071001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (33321229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 859 + ... + 8208.

Almost surely, 2^33321225 is an apocalyptic number.

33321225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33321225 is a deficient number, since it is larger than the sum of its proper divisors (30771399).

33321225 is a wasteful number, since it uses less digits than its factorization.

33321225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094 (or 9082 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 33321225 is about 5772.4539842254. The cubic root of 33321225 is about 321.7908219249.

Adding to 33321225 its reverse (52212333), we get a palindrome (85533558).

The spelling of 33321225 in words is "thirty-three million, three hundred twenty-one thousand, two hundred twenty-five".