33225913 has 4 divisors (see below), whose sum is σ = 37972480. Its totient is φ = 28479348.

The previous prime is 33225911. The next prime is 33225943. The reversal of 33225913 is 31952233.

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.

It is a cyclic number.

It is not a de Polignac number, because 33225913 - 2¹ = 33225911 is a prime.

It is a super-2 number, since 2×33225913² = 2207922589367138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33225911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2373273 + ... + 2373286.

It is an arithmetic number, because the mean of its divisors is an integer number (9493120).

Almost surely, 2^33225913 is an apocalyptic number.

It is an amenable number.

33225913 is a deficient number, since it is larger than the sum of its proper divisors (4746567).

33225913 is an equidigital number, since it uses as much as digits as its factorization.

33225913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746566.

The product of its digits is 4860, while the sum is 28.

The square root of 33225913 is about 5764.1923111569. The cubic root of 33225913 is about 321.4837122003.

The spelling of 33225913 in words is "thirty-three million, two hundred twenty-five thousand, nine hundred thirteen".