1255569097 has 2 divisors, whose sum is σ = 1255569098. Its totient is φ = 1255569096.

The previous prime is 1255569089. The next prime is 1255569127. The reversal of 1255569097 is 7909655521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 934586041 + 320983056 = 30571^2 + 17916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255569097 - 2³ = 1255569089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255569097.

It is not a weakly prime, because it can be changed into another prime (1255564097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627784548 + 627784549.

It is an arithmetic number, because the mean of its divisors is an integer number (627784549).

Almost surely, 2^1255569097 is an apocalyptic number.

It is an amenable number.

1255569097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255569097 is an equidigital number, since it uses as much as digits as its factorization.

1255569097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 850500, while the sum is 49.

The square root of 1255569097 is about 35434.0104560576. The cubic root of 1255569097 is about 1078.8147425122.

The spelling of 1255569097 in words is "one billion, two hundred fifty-five million, five hundred sixty-nine thousand, ninety-seven".