32904225 has 30 divisors (see below), whose sum is σ = 60953750. Its totient is φ = 17547840.

The previous prime is 32904203. The next prime is 32904229. The reversal of 32904225 is 52240923.

It can be written as a sum of positive squares in 3 ways, for example, as 2862864 + 30041361 = 1692^2 + 5481^2 .

It is not a de Polignac number, because 32904225 - 2¹⁰ = 32903201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (32904229) 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 29 ways as a sum of consecutive naturals, for example, 6100 + ... + 10149.

Almost surely, 2^32904225 is an apocalyptic number.

It is an amenable number.

32904225 is a deficient number, since it is larger than the sum of its proper divisors (28049525).

32904225 is a wasteful number, since it uses less digits than its factorization.

32904225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16271 (or 16257 counting only the distinct ones).

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

The square root of 32904225 is about 5736.2204455547. The cubic root of 32904225 is about 320.4428276715.

The spelling of 32904225 in words is "thirty-two million, nine hundred four thousand, two hundred twenty-five".