33664025 has 12 divisors (see below), whose sum is σ = 41965692. Its totient is φ = 26787840.

The previous prime is 33664003. The next prime is 33664039. The reversal of 33664025 is 52046633.

It can be written as a sum of positive squares in 6 ways, for example, as 6091024 + 27573001 = 2468^2 + 5251^2 .

It is not a de Polignac number, because 33664025 - 2⁸ = 33663769 is a prime.

It is a super-2 number, since 2×33664025² = 2266533158401250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (3497141).

Almost surely, 2^33664025 is an apocalyptic number.

It is an amenable number.

33664025 is a deficient number, since it is larger than the sum of its proper divisors (8301667).

33664025 is a wasteful number, since it uses less digits than its factorization.

33664025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180 (or 7175 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 33664025 is about 5802.0707510336. The cubic root of 33664025 is about 322.8905590177.

The spelling of 33664025 in words is "thirty-three million, six hundred sixty-four thousand, twenty-five".