33225664 has 14 divisors (see below), whose sum is σ = 65932304. Its totient is φ = 16612800.

The previous prime is 33225641. The next prime is 33225671. The reversal of 33225664 is 46652233.

It is a happy number.

It is a super-2 number, since 2×33225664² = 2207889496481792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259512 + ... + 259639.

Almost surely, 2^33225664 is an apocalyptic number.

It is an amenable number.

33225664 is a deficient number, since it is larger than the sum of its proper divisors (32706640).

33225664 is an equidigital number, since it uses as much as digits as its factorization.

33225664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519163 (or 519153 counting only the distinct ones).

The product of its digits is 25920, while the sum is 31.

The square root of 33225664 is about 5764.1707122534. The cubic root of 33225664 is about 321.4829091158.

Adding to 33225664 its reverse (46652233), we get a palindrome (79877897).

The spelling of 33225664 in words is "thirty-three million, two hundred twenty-five thousand, six hundred sixty-four".