Is 265 a prime number? What are the divisors of 265?

## Parity of 265

265 is an odd number, because it is not evenly divisible by 2.

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## Is 265 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 265 is about 16.279.

Thus, the square root of 265 is not an integer, and therefore 265 is not a square number.

## What is the square number of 265?

The square of a number (here 265) is the result of the product of this number (265) by itself (i.e., 265 × 265); the square of 265 is sometimes called "raising 265 to the power 2", or "265 squared".

The square of 265 is 70 225 because 265 × 265 = 2652 = 70 225.

As a consequence, 265 is the square root of 70 225.

## Number of digits of 265

265 is a number with 3 digits.

## What are the multiples of 265?

The multiples of 265 are all integers evenly divisible by 265, that is all numbers such that the remainder of the division by 265 is zero. There are infinitely many multiples of 265. The smallest multiples of 265 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 265). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 16.279). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 265

• Preceding numbers: …263, 264
• Following numbers: 266, 267

### Nearest numbers from 265

• Preceding prime number: 263
• Following prime number: 269
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