33220325 has 12 divisors (see below), whose sum is σ = 41436708. Its totient is φ = 26419200.

The previous prime is 33220321. The next prime is 33220331. The reversal of 33220325 is 52302233.

It can be written as a sum of positive squares in 6 ways, for example, as 1331716 + 31888609 = 1154^2 + 5647^2 .

It is not a de Polignac number, because 33220325 - 2² = 33220321 is a prime.

It is a super-2 number, since 2×33220325² = 2207179986211250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33220297 and 33220306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485 + ... + 8165.

It is an arithmetic number, because the mean of its divisors is an integer number (3453059).

Almost surely, 2^33220325 is an apocalyptic number.

It is an amenable number.

33220325 is a deficient number, since it is larger than the sum of its proper divisors (8216383).

33220325 is a wasteful number, since it uses less digits than its factorization.

33220325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7864 (or 7859 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 33220325 is about 5763.7075741228. The cubic root of 33220325 is about 321.4656886002.

Adding to 33220325 its reverse (52302233), we get a palindrome (85522558).

The spelling of 33220325 in words is "thirty-three million, two hundred twenty thousand, three hundred twenty-five".