204725321 has 2 divisors, whose sum is σ = 204725322. Its totient is φ = 204725320.

The previous prime is 204725303. The next prime is 204725363. The reversal of 204725321 is 123527402.

204725321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153760000 + 50965321 = 12400^2 + 7139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204725321 is a prime.

It is not a weakly prime, because it can be changed into another prime (204725371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102362660 + 102362661.

It is an arithmetic number, because the mean of its divisors is an integer number (102362661).

Almost surely, 2^204725321 is an apocalyptic number.

It is an amenable number.

204725321 is a deficient number, since it is larger than the sum of its proper divisors (1).

204725321 is an equidigital number, since it uses as much as digits as its factorization.

204725321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 204725321 is about 14308.2256412177. The cubic root of 204725321 is about 589.3733852941.

The spelling of 204725321 in words is "two hundred four million, seven hundred twenty-five thousand, three hundred twenty-one".