33904425 has 24 divisors (see below), whose sum is σ = 57364384. Its totient is φ = 17660160.

The previous prime is 33904411. The next prime is 33904427. The reversal of 33904425 is 52440933.

It is not a de Polignac number, because 33904425 - 2¹¹ = 33902377 is a prime.

It is a super-2 number, since 2×33904425² = 2299020069161250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33904392 and 33904401.

It is not an unprimeable number, because it can be changed into a prime (33904427) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2032 + ... + 8481.

Almost surely, 2^33904425 is an apocalyptic number.

It is an amenable number.

33904425 is a deficient number, since it is larger than the sum of its proper divisors (23459959).

33904425 is a wasteful number, since it uses less digits than its factorization.

33904425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10569 (or 10564 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 33904425 is about 5822.7506386587. The cubic root of 33904425 is about 323.6573404470.

The spelling of 33904425 in words is "thirty-three million, nine hundred four thousand, four hundred twenty-five".