415339
Little known to you foolish mortals, this number has great astronomical significance. If we add the numbers, we get the number 25, a perfect square. If we multiply the digits, we get 1620. Divide by the first number, 4, and we have 405. Divide by the third number, 5, and we have 81, another perfect square. Not only that, but the root of 81 is 9, which is ALSO a perfect square.
These squares make the number have extreme power, and results in it's amazing properties. The number is actually the code to unlocking the safe which contains all of the universe's secrets. By entering the code into the safe, you reveal the 3 squared combination lock. Notice the significance: THREE squares. Three perfect squares. By placing the numbers we factored out in the order we factored them out in (4 5 1), you will reveal the universe's secrets.
Unfortunately, no one knows where the universe safe is.
Congratulations. You just wasted 5 minutes of your life learning information that will never be useful.