1115125889 has 2 divisors, whose sum is σ = 1115125890. Its totient is φ = 1115125888.

The previous prime is 1115125873. The next prime is 1115125919. The reversal of 1115125889 is 9885215111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106227600 + 8898289 = 33260^2 + 2983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115125889 - 2⁴ = 1115125873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115125819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557562944 + 557562945.

It is an arithmetic number, because the mean of its divisors is an integer number (557562945).

Almost surely, 2^1115125889 is an apocalyptic number.

It is an amenable number.

1115125889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115125889 is an equidigital number, since it uses as much as digits as its factorization.

1115125889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 41.

The square root of 1115125889 is about 33393.5006999865. The cubic root of 1115125889 is about 1036.9901539839.

The spelling of 1115125889 in words is "one billion, one hundred fifteen million, one hundred twenty-five thousand, eight hundred eighty-nine".