204625081 has 2 divisors, whose sum is σ = 204625082. Its totient is φ = 204625080.

The previous prime is 204625051. The next prime is 204625111. The reversal of 204625081 is 180526402.

It is a balanced prime because it is at equal distance from previous prime (204625051) and next prime (204625111).

It can be written as a sum of positive squares in only one way, i.e., 197655481 + 6969600 = 14059^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 204625081 - 2²³ = 196236473 is a prime.

It is a super-2 number, since 2×204625081² = 83742847548513122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204625021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102312540 + 102312541.

It is an arithmetic number, because the mean of its divisors is an integer number (102312541).

Almost surely, 2^204625081 is an apocalyptic number.

It is an amenable number.

204625081 is a deficient number, since it is larger than the sum of its proper divisors (1).

204625081 is an equidigital number, since it uses as much as digits as its factorization.

204625081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 204625081 is about 14304.7223321531. The cubic root of 204625081 is about 589.2771776328.

The spelling of 204625081 in words is "two hundred four million, six hundred twenty-five thousand, eighty-one".