33220025 has 12 divisors (see below), whose sum is σ = 41521152. Its totient is φ = 26364240.

The previous prime is 33220013. The next prime is 33220049. The reversal of 33220025 is 52002233.

It is not a de Polignac number, because 33220025 - 2¹² = 33215929 is a prime.

It is a super-2 number, since 2×33220025² = 2207140122001250, 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 = 33219985 and 33220012.

It is an unprimeable number.

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, 2057 + ... + 8406.

It is an arithmetic number, because the mean of its divisors is an integer number (3460096).

Almost surely, 2^33220025 is an apocalyptic number.

It is an amenable number.

33220025 is a deficient number, since it is larger than the sum of its proper divisors (8301127).

33220025 is a wasteful number, since it uses less digits than its factorization.

33220025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600 (or 10595 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 33220025 is about 5763.6815491489. The cubic root of 33220025 is about 321.4647209196.

Adding to 33220025 its reverse (52002233), we get a palindrome (85222258).

The spelling of 33220025 in words is "thirty-three million, two hundred twenty thousand, twenty-five".