33030225 has 18 divisors (see below), whose sum is σ = 59161206. Its totient is φ = 17616000.

The previous prime is 33030199. The next prime is 33030253. The reversal of 33030225 is 52203033.

It can be written as a sum of positive squares in 3 ways, for example, as 8020224 + 25010001 = 2832^2 + 5001^2 .

It is not a de Polignac number, because 33030225 - 2¹⁵ = 32997457 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33030198 and 33030207.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 73176 + ... + 73625.

Almost surely, 2^33030225 is an apocalyptic number.

It is an amenable number.

33030225 is a deficient number, since it is larger than the sum of its proper divisors (26130981).

33030225 is a wasteful number, since it uses less digits than its factorization.

33030225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146817 (or 146809 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 33030225 is about 5747.1927930077. The cubic root of 33030225 is about 320.8513301125.

Adding to 33030225 its reverse (52203033), we get a palindrome (85233258).

The spelling of 33030225 in words is "thirty-three million, thirty thousand, two hundred twenty-five".