33113225 has 12 divisors (see below), whose sum is σ = 42016656. Its totient is φ = 25873680.

The previous prime is 33113221. The next prime is 33113231. The reversal of 33113225 is 52231133.

It is not a de Polignac number, because 33113225 - 2² = 33113221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33113197 and 33113206.

It is not an unprimeable number, because it can be changed into a prime (33113221) 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, 14327 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (3501388).

Almost surely, 2^33113225 is an apocalyptic number.

It is an amenable number.

33113225 is a deficient number, since it is larger than the sum of its proper divisors (8903431).

33113225 is a wasteful number, since it uses less digits than its factorization.

33113225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30856 (or 30851 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 33113225 is about 5754.4091790557. The cubic root of 33113225 is about 321.1198557351.

Adding to 33113225 its reverse (52231133), we get a palindrome (85344358).

The spelling of 33113225 in words is "thirty-three million, one hundred thirteen thousand, two hundred twenty-five".