10255643309 has 2 divisors, whose sum is σ = 10255643310. Its totient is φ = 10255643308.

The previous prime is 10255643297. The next prime is 10255643311. The reversal of 10255643309 is 90334655201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5449687684 + 4805955625 = 73822^2 + 69325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10255643309 is a prime.

Together with 10255643311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10255643369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5127821654 + 5127821655.

It is an arithmetic number, because the mean of its divisors is an integer number (5127821655).

Almost surely, 2^10255643309 is an apocalyptic number.

It is an amenable number.

10255643309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10255643309 is an equidigital number, since it uses as much as digits as its factorization.

10255643309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 10255643309 in words is "ten billion, two hundred fifty-five million, six hundred forty-three thousand, three hundred nine".