1125505019 has 2 divisors, whose sum is σ = 1125505020. Its totient is φ = 1125505018.

The previous prime is 1125504997. The next prime is 1125505039. The reversal of 1125505019 is 9105055211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1125505019 - 2⁸ = 1125504763 is a prime.

It is a super-2 number, since 2×1125505019² = 2533523095588380722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1125504982 and 1125505000.

It is not a weakly prime, because it can be changed into another prime (1125505039) 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, 562752509 + 562752510.

It is an arithmetic number, because the mean of its divisors is an integer number (562752510).

Almost surely, 2^1125505019 is an apocalyptic number.

1125505019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125505019 is an equidigital number, since it uses as much as digits as its factorization.

1125505019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 1125505019 is about 33548.5471965628. The cubic root of 1125505019 is about 1040.1975151856.

The spelling of 1125505019 in words is "one billion, one hundred twenty-five million, five hundred five thousand, nineteen".