255385460609 has 2 divisors, whose sum is σ = 255385460610. Its totient is φ = 255385460608.

The previous prime is 255385460581. The next prime is 255385460633. The reversal of 255385460609 is 906064583552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210070972225 + 45314488384 = 458335^2 + 212872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255385460609 is a prime.

It is not a weakly prime, because it can be changed into another prime (255385465609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127692730304 + 127692730305.

It is an arithmetic number, because the mean of its divisors is an integer number (127692730305).

Almost surely, 2^255385460609 is an apocalyptic number.

It is an amenable number.

255385460609 is a deficient number, since it is larger than the sum of its proper divisors (1).

255385460609 is an equidigital number, since it uses as much as digits as its factorization.

255385460609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 255385460609 in words is "two hundred fifty-five billion, three hundred eighty-five million, four hundred sixty thousand, six hundred nine".