The Number 225: Properties and MeaningsPrime Factors of 225=3x3x5x5.
225 is a Square Number(15x15).
225 is an Octagonal Number.
225 is a 24-gonal Number.
225 is a 76-gonal Number.
225 is a Centered Octagonal Number.
The number of squares on a Scrabble board=225.
The Year 225 ADIn the year 225 AD Emperor Gordian III was born.
The Sassanides defeated the last Parthian king in 225 AD.
"The earliest copy of Mark is 225 A.D."
In the year 225 AD Trieu Thi Trinh, Vietnamese female warrior, was born.