1133125513 has 4 divisors (see below), whose sum is σ = 1220289028. Its totient is φ = 1045962000.

The previous prime is 1133125501. The next prime is 1133125517. The reversal of 1133125513 is 3155213311.

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 734843664 + 398281849 = 27108^2 + 19957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133125513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133125517) 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, 43581738 + ... + 43581763.

It is an arithmetic number, because the mean of its divisors is an integer number (305072257).

Almost surely, 2^1133125513 is an apocalyptic number.

1133125513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1133125513 is a deficient number, since it is larger than the sum of its proper divisors (87163515).

1133125513 is an equidigital number, since it uses as much as digits as its factorization.

1133125513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87163514.

The product of its digits is 1350, while the sum is 25.

The square root of 1133125513 is about 33661.9297278097. The cubic root of 1133125513 is about 1042.5398698491.

Adding to 1133125513 its reverse (3155213311), we get a palindrome (4288338824).

The spelling of 1133125513 in words is "one billion, one hundred thirty-three million, one hundred twenty-five thousand, five hundred thirteen".