1115725019 has 2 divisors, whose sum is σ = 1115725020. Its totient is φ = 1115725018.

The previous prime is 1115725003. The next prime is 1115725031. The reversal of 1115725019 is 9105275111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115725019 - 2⁴ = 1115725003 is a prime.

It is a super-2 number, since 2×1115725019² = 2489684636045100722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1115724019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557862509 + 557862510.

It is an arithmetic number, because the mean of its divisors is an integer number (557862510).

Almost surely, 2^1115725019 is an apocalyptic number.

1115725019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115725019 is an equidigital number, since it uses as much as digits as its factorization.

1115725019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 32.

The square root of 1115725019 is about 33402.4702529618. The cubic root of 1115725019 is about 1037.1758372572.

The spelling of 1115725019 in words is "one billion, one hundred fifteen million, seven hundred twenty-five thousand, nineteen".