25

My Bowen 5th Grade Math Special Number is: 25! As my project about it I have decided to create this web site! Sorry, www.25.com wasn't available, and neither was www.specialnumber.com. This site is divided into two sections: why I chose the number 25 as well as how my number relates to the real world, and facts about the number 25, such as if it's odd or even, prime or composite, and what its factors are.

ichose 25 because it is a nice round number, and therefore probably appears more in the real world than something like 29, 61, or 93. Also, as of November 2000, my older sister Annie is 25. Another reason I chose 25 is I've always liked the number 5 because it is low but very common, and 25 is 5 squared. 25% of 100 is 25, so 100 divided into fourths is 25. Another word for fourths is quarters, and 25¢ is equal to one quarter! I'm sure that I could go on for quite a long time and list all the reasons I like 25, and all the ways that 25 relates to the real world, but I'm not going to because of time and space.

Following are some facts about my special number:

25 is a composite number, and therefore is not a prime number.

25 is also an odd number, and therefore not even.

25 is a square Number-- its Square Root is 5.

The factors of 25 are 1, 5, and 25.

The prrper factors of 25 are 1 and 5.

A common factor of 25, 6,405, 2,010 and 10,590 is 5.

A few multiples of 25 are 50, 75, and
125.

A couple common multiples of 15 and 25 are 75 and
150.

If you want to write or type 25 using exponents it looks like this: 52. This would be read as "5 squared".

Here's what the factor tree of 25 would look like:

factor tree

As you can see, the prime factorization of 25 is 5x5, or 52.

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