33325013 has 4 divisors (see below), whose sum is σ = 33358368. Its totient is φ = 33291660.

The previous prime is 33325009. The next prime is 33325027. The reversal of 33325013 is 31052333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31052333 = 13 ⋅2388641.

It is a cyclic number.

It is not a de Polignac number, because 33325013 - 2² = 33325009 is a prime.

It is a super-2 number, since 2×33325013² = 2221112982900338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33325813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15131 + ... + 17192.

It is an arithmetic number, because the mean of its divisors is an integer number (8339592).

Almost surely, 2^33325013 is an apocalyptic number.

It is an amenable number.

33325013 is a deficient number, since it is larger than the sum of its proper divisors (33355).

33325013 is a wasteful number, since it uses less digits than its factorization.

33325013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33354.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 33325013 is about 5772.7820849223. The cubic root of 33325013 is about 321.8030153286.

Adding to 33325013 its reverse (31052333), we get a palindrome (64377346).

The spelling of 33325013 in words is "thirty-three million, three hundred twenty-five thousand, thirteen".