1125606899 has 16 divisors (see below), whose sum is σ = 1179079200. Its totient is φ = 1073189376.

The previous prime is 1125606883. The next prime is 1125606919. The reversal of 1125606899 is 9986065211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1125606899 - 2⁴ = 1125606883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125606799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274312 + ... + 1275194.

It is an arithmetic number, because the mean of its divisors is an integer number (73692450).

Almost surely, 2^1125606899 is an apocalyptic number.

1125606899 is a deficient number, since it is larger than the sum of its proper divisors (53472301).

1125606899 is a wasteful number, since it uses less digits than its factorization.

1125606899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 1125606899 is about 33550.0655588033. The cubic root of 1125606899 is about 1040.2289002449.

The spelling of 1125606899 in words is "one billion, one hundred twenty-five million, six hundred six thousand, eight hundred ninety-nine".