33680025 has 18 divisors (see below), whose sum is σ = 60325070. Its totient is φ = 17962560.

The previous prime is 33680011. The next prime is 33680041. The reversal of 33680025 is 52008633.

It can be written as a sum of positive squares in 3 ways, for example, as 467856 + 33212169 = 684^2 + 5763^2 .

It is not a de Polignac number, because 33680025 - 2⁵ = 33679993 is a prime.

It is a super-2 number, since 2×33680025² = 2268688168001250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74620 + ... + 75069.

Almost surely, 2^33680025 is an apocalyptic number.

It is an amenable number.

33680025 is a deficient number, since it is larger than the sum of its proper divisors (26645045).

33680025 is a wasteful number, since it uses less digits than its factorization.

33680025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149705 (or 149697 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 33680025 is about 5803.4494053106. The cubic root of 33680025 is about 322.9417059090.

Adding to 33680025 its reverse (52008633), we get a palindrome (85688658).

The spelling of 33680025 in words is "thirty-three million, six hundred eighty thousand, twenty-five".