What is 25 factorial ?

To find 25 factorial, or 25!, simply use the formula that multiplies the number 25 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Twenty-five :

  25! is exactly : 15511210043330985984000000

  Factorial of 25 can be calculated as:
25! = 25 x 24 x 23 x 22 x ... x 3 x 2 x 1

  The number of trailing zeros in 25! is 6

  The number of digits in 25 factorial is 26.

• 21 Factorial
• 22 Factorial
• 23 Factorial
• 24 Factorial
• Factorial of 26
• Factorial of 27
• Factorial of 28
• Factorial of 29

A factorial is symbolized by an integer and an exclamation mark. In arithmetic, factorial is a multiplication function of natural numbers .

It multiplies the number by every standard number that is less than it .

Symbolically, it is represented as "!".

The function is used, among other things, to find the "n" way pieces can be arranged .

To find the factorial of any given number, replace the value for n in the given rule :

n! = n × (n-1) × (n-2) × (n-3) × ….× 3 × 2 × 1

The expansion of the formula gives the numbers to be replicated to each other to obtain the factorial of the number.

We can also measure a factorial from the previous one. The factorial of any number is that number replicated the factorial of (that number minus 1).

So the rule is : n! = n × (n−1)!

Example :
25! Factorial = 25 x 24 x 23 x 22 x ... x 3 x 2 x 1 = 25 × 24! = 15511210043330985984000000

The best use of factorial is in Combinations and Permutations.

Example : Determine how to arrange letters without repeating?

There one way for 1 letter "a":
2 ways for two letters "ab": ab, ba.
There are 6 ways for 3 letters "abc": abc acb cab bac bca.
There are 24 ways for 1234 of the letters "abcd"

25 in French

25 in English

Factors of 25