1255568009 has 2 divisors, whose sum is σ = 1255568010. Its totient is φ = 1255568008.

The previous prime is 1255568003. The next prime is 1255568029. The reversal of 1255568009 is 9008655521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 761484025 + 494083984 = 27595^2 + 22228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255568009 - 2⁴ = 1255567993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255568003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627784004 + 627784005.

It is an arithmetic number, because the mean of its divisors is an integer number (627784005).

Almost surely, 2^1255568009 is an apocalyptic number.

It is an amenable number.

1255568009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255568009 is an equidigital number, since it uses as much as digits as its factorization.

1255568009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 1255568009 is about 35433.9951035725. The cubic root of 1255568009 is about 1078.8144309003.

The spelling of 1255568009 in words is "one billion, two hundred fifty-five million, five hundred sixty-eight thousand, nine".