33138225 has 36 divisors (see below), whose sum is σ = 61281792. Its totient is φ = 17100000.

The previous prime is 33138211. The next prime is 33138241. The reversal of 33138225 is 52283133.

It is not a de Polignac number, because 33138225 - 2¹¹ = 33136177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4600 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (1702272).

Almost surely, 2^33138225 is an apocalyptic number.

It is an amenable number.

33138225 is a deficient number, since it is larger than the sum of its proper divisors (28143567).

33138225 is a wasteful number, since it uses less digits than its factorization.

33138225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798 (or 4790 counting only the distinct ones).

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

The square root of 33138225 is about 5756.5810165410. The cubic root of 33138225 is about 321.2006490022.

The spelling of 33138225 in words is "thirty-three million, one hundred thirty-eight thousand, two hundred twenty-five".