33640325 has 12 divisors (see below), whose sum is σ = 42422880. Its totient is φ = 26454960.

The previous prime is 33640303. The next prime is 33640337. The reversal of 33640325 is 52304633.

It is not a de Polignac number, because 33640325 - 2⁸ = 33640069 is a prime.

It is a super-2 number, since 2×33640325² = 2263342932211250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33640294 and 33640303.

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, 9929 + ... + 12878.

It is an arithmetic number, because the mean of its divisors is an integer number (3535240).

Almost surely, 2^33640325 is an apocalyptic number.

It is an amenable number.

33640325 is a deficient number, since it is larger than the sum of its proper divisors (8782555).

33640325 is a wasteful number, since it uses less digits than its factorization.

33640325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22876 (or 22871 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 33640325 is about 5800.0280171737. The cubic root of 33640325 is about 322.8147678947.

Adding to 33640325 its reverse (52304633), we get a palindrome (85944958).

The spelling of 33640325 in words is "thirty-three million, six hundred forty thousand, three hundred twenty-five".