33242225 has 36 divisors (see below), whose sum is σ = 45224784. Its totient is φ = 24218880.

The previous prime is 33242221. The next prime is 33242233. The reversal of 33242225 is 52224233.

It is not a de Polignac number, because 33242225 - 2² = 33242221 is a prime.

It is a super-2 number, since 2×33242225² = 2210091045901250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33242225.

It is not an unprimeable number, because it can be changed into a prime (33242221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 310622 + ... + 310728.

It is an arithmetic number, because the mean of its divisors is an integer number (1256244).

Almost surely, 2^33242225 is an apocalyptic number.

It is an amenable number.

33242225 is a deficient number, since it is larger than the sum of its proper divisors (11982559).

33242225 is a wasteful number, since it uses less digits than its factorization.

33242225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 172 counting only the distinct ones).

The product of its digits is 2880, while the sum is 23.

The square root of 33242225 is about 5765.6070799180. The cubic root of 33242225 is about 321.5363135577.

Adding to 33242225 its reverse (52224233), we get a palindrome (85466458).

The spelling of 33242225 in words is "thirty-three million, two hundred forty-two thousand, two hundred twenty-five".