2257536209 has 2 divisors, whose sum is σ = 2257536210. Its totient is φ = 2257536208.

The previous prime is 2257536187. The next prime is 2257536277. The reversal of 2257536209 is 9026357522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1736555584 + 520980625 = 41672^2 + 22825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257536209 - 2²⁸ = 1989100753 is a prime.

It is not a weakly prime, because it can be changed into another prime (2257536109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128768104 + 1128768105.

It is an arithmetic number, because the mean of its divisors is an integer number (1128768105).

Almost surely, 2^2257536209 is an apocalyptic number.

It is an amenable number.

2257536209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257536209 is an equidigital number, since it uses as much as digits as its factorization.

2257536209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 2257536209 is about 47513.5371131218. The cubic root of 2257536209 is about 1311.8320633952.

The spelling of 2257536209 in words is "two billion, two hundred fifty-seven million, five hundred thirty-six thousand, two hundred nine".