1255119889 has 2 divisors, whose sum is σ = 1255119890. Its totient is φ = 1255119888.

The previous prime is 1255119869. The next prime is 1255119907. The reversal of 1255119889 is 9889115521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712462864 + 542657025 = 26692^2 + 23295^2 .

It is an emirp because it is prime and its reverse (9889115521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255119889 - 2⁵ = 1255119857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255119869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627559944 + 627559945.

It is an arithmetic number, because the mean of its divisors is an integer number (627559945).

Almost surely, 2^1255119889 is an apocalyptic number.

It is an amenable number.

1255119889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255119889 is an equidigital number, since it uses as much as digits as its factorization.

1255119889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 49.

The square root of 1255119889 is about 35427.6712330912. The cubic root of 1255119889 is about 1078.6860704439.

The spelling of 1255119889 in words is "one billion, two hundred fifty-five million, one hundred nineteen thousand, eight hundred eighty-nine".