2256600209 has 2 divisors, whose sum is σ = 2256600210. Its totient is φ = 2256600208.

The previous prime is 2256600193. The next prime is 2256600211. The reversal of 2256600209 is 9020066522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2251217809 + 5382400 = 47447^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256600209 - 2⁴ = 2256600193 is a prime.

Together with 2256600211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2256600259) 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, 1128300104 + 1128300105.

It is an arithmetic number, because the mean of its divisors is an integer number (1128300105).

Almost surely, 2^2256600209 is an apocalyptic number.

It is an amenable number.

2256600209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256600209 is an equidigital number, since it uses as much as digits as its factorization.

2256600209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2256600209 is about 47503.6862674888. The cubic root of 2256600209 is about 1311.6507382050.

The spelling of 2256600209 in words is "two billion, two hundred fifty-six million, six hundred thousand, two hundred nine".