3205730225 has 12 divisors (see below), whose sum is σ = 4147936896. Its totient is φ = 2453080080.

The previous prime is 3205730219. The next prime is 3205730233. The reversal of 3205730225 is 5220375023.

It is a happy number.

It is not a de Polignac number, because 3205730225 - 2⁶ = 3205730161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2787017 + ... + 2788166.

It is an arithmetic number, because the mean of its divisors is an integer number (345661408).

Almost surely, 2^3205730225 is an apocalyptic number.

It is an amenable number.

3205730225 is a deficient number, since it is larger than the sum of its proper divisors (942206671).

3205730225 is a wasteful number, since it uses less digits than its factorization.

3205730225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575216 (or 5575211 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 3205730225 is about 56619.1683531293. The cubic root of 3205730225 is about 1474.4916720058.

The spelling of 3205730225 in words is "three billion, two hundred five million, seven hundred thirty thousand, two hundred twenty-five".