5 Letter Words That End With O: This One Trick Will Amaze Your Friends! - Fizz News

Five is the only prime number to end in the digit 5, because all other numbers written with a 5 in the ones-place under the decimal system are multiples of five. Mathematics Five is the third prime number, after two and three, and before seven. The number five is also an odd number. Most people have five fingers (including one thumb) on each hand and five toes.