This is a rational number!
An irrational number has repeating values or just random numbers after the decimal point.
Here's an example...
Tell, does this number look rational?
4.2359712309458730495870192354870394587234098657293085412364781236409584790853467923456790324785098234570923845702398547 (and it goes on forever...and ever...and ever......)
I'm quite sure that whatever that number is, it is not a rational one!
But, does this number look rational?
150.594.
Well, it terminates. That's the important part there, this number terminates. If the decimals never terminate, the number is irrational. =)