10255556809 has 2 divisors, whose sum is σ = 10255556810. Its totient is φ = 10255556808.

The previous prime is 10255556627. The next prime is 10255556819. The reversal of 10255556809 is 90865555201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10040641209 + 214915600 = 100203^2 + 14660^2 .

It is a cyclic number.

It is not a de Polignac number, because 10255556809 - 2¹¹ = 10255554761 is a prime.

It is not a weakly prime, because it can be changed into another prime (10255556819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5127778404 + 5127778405.

It is an arithmetic number, because the mean of its divisors is an integer number (5127778405).

Almost surely, 2^10255556809 is an apocalyptic number.

It is an amenable number.

10255556809 is a deficient number, since it is larger than the sum of its proper divisors (1).

10255556809 is an equidigital number, since it uses as much as digits as its factorization.

10255556809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 46.

The spelling of 10255556809 in words is "ten billion, two hundred fifty-five million, five hundred fifty-six thousand, eight hundred nine".