1125563839 has 2 divisors, whose sum is σ = 1125563840. Its totient is φ = 1125563838.

The previous prime is 1125563833. The next prime is 1125563843. The reversal of 1125563839 is 9383655211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1125563839 - 2⁵ = 1125563807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125563795 and 1125563804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125563833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562781919 + 562781920.

It is an arithmetic number, because the mean of its divisors is an integer number (562781920).

Almost surely, 2^1125563839 is an apocalyptic number.

1125563839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125563839 is an equidigital number, since it uses as much as digits as its factorization.

1125563839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 43.

The square root of 1125563839 is about 33549.4238251568. The cubic root of 1125563839 is about 1040.2156354519.

The spelling of 1125563839 in words is "one billion, one hundred twenty-five million, five hundred sixty-three thousand, eight hundred thirty-nine".