1125113105 has 4 divisors (see below), whose sum is σ = 1350135732. Its totient is φ = 900090480.

The previous prime is 1125113083. The next prime is 1125113107. The reversal of 1125113105 is 5013115211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 703098256 + 422014849 = 26516^2 + 20543^2 .

It is not a de Polignac number, because 1125113105 - 2¹⁰ = 1125112081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1125113107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112511306 + ... + 112511315.

It is an arithmetic number, because the mean of its divisors is an integer number (337533933).

Almost surely, 2^1125113105 is an apocalyptic number.

It is an amenable number.

1125113105 is a deficient number, since it is larger than the sum of its proper divisors (225022627).

1125113105 is an equidigital number, since it uses as much as digits as its factorization.

1125113105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225022626.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1125113105 is about 33542.7056899112. The cubic root of 1125113105 is about 1040.0767648588.

Adding to 1125113105 its reverse (5013115211), we get a palindrome (6138228316).

The spelling of 1125113105 in words is "one billion, one hundred twenty-five million, one hundred thirteen thousand, one hundred five".