1125115133 has 4 divisors (see below), whose sum is σ = 1125241788. Its totient is φ = 1124988480.

The previous prime is 1125115109. The next prime is 1125115139. The reversal of 1125115133 is 3315115211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3315115211 = 61 ⋅54346151.

It can be written as a sum of positive squares in 2 ways, for example, as 960814009 + 164301124 = 30997^2 + 12818^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125115133 - 2⁸ = 1125114877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1125115099 and 1125115108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125115139) 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, 48908 + ... + 68133.

It is an arithmetic number, because the mean of its divisors is an integer number (281310447).

Almost surely, 2^1125115133 is an apocalyptic number.

It is an amenable number.

1125115133 is a deficient number, since it is larger than the sum of its proper divisors (126655).

1125115133 is an equidigital number, since it uses as much as digits as its factorization.

1125115133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126654.

The product of its digits is 450, while the sum is 23.

The square root of 1125115133 is about 33542.7359200170. The cubic root of 1125115133 is about 1040.0773897662.

The spelling of 1125115133 in words is "one billion, one hundred twenty-five million, one hundred fifteen thousand, one hundred thirty-three".