2305500209 has 2 divisors, whose sum is σ = 2305500210. Its totient is φ = 2305500208.

The previous prime is 2305500193. The next prime is 2305500247. The reversal of 2305500209 is 9020055032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2288665600 + 16834609 = 47840^2 + 4103^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305500209 - 2⁴ = 2305500193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2305500269) 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, 1152750104 + 1152750105.

It is an arithmetic number, because the mean of its divisors is an integer number (1152750105).

Almost surely, 2^2305500209 is an apocalyptic number.

It is an amenable number.

2305500209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305500209 is an equidigital number, since it uses as much as digits as its factorization.

2305500209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 2305500209 is about 48015.6246340709. The cubic root of 2305500209 is about 1321.0575029270.

The spelling of 2305500209 in words is "two billion, three hundred five million, five hundred thousand, two hundred nine".