265133133 has 12 divisors (see below), whose sum is σ = 385542300. Its totient is φ = 175568256.

The previous prime is 265133129. The next prime is 265133147. The reversal of 265133133 is 331331562.

It is a happy number.

265133133 is a `hidden beast` number, since 2 + 651 + 3 + 3 + 1 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55086084 + 210047049 = 7422^2 + 14493^2 .

It is not a de Polignac number, because 265133133 - 2² = 265133129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265133097 and 265133106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265133833) 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 11 ways as a sum of consecutive naturals, for example, 97516 + ... + 100197.

It is an arithmetic number, because the mean of its divisors is an integer number (32128525).

Almost surely, 2^265133133 is an apocalyptic number.

It is an amenable number.

265133133 is a deficient number, since it is larger than the sum of its proper divisors (120409167).

265133133 is a wasteful number, since it uses less digits than its factorization.

265133133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197868 (or 197865 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 265133133 is about 16282.9092302328. The cubic root of 265133133 is about 642.4233749152.

Adding to 265133133 its reverse (331331562), we get a palindrome (596464695).

It can be divided in two parts, 26513 and 3133, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 265133133 in words is "two hundred sixty-five million, one hundred thirty-three thousand, one hundred thirty-three".