The two smallest prime factors of $250$ are $2$ and $5$. Thus, the sum is $2 + 5 = 7$. 
What is the sum of the two smallest prime factors of $250$? (2007 AMC 8 Problems, Question \#3) 
(1) $$2$$ 
(2) $$5$$ 
(3) $$7$$ 
(4) $$10$$ 
(5) $$12$$ 