A2 How many divisors does the number 7425 have?
(A) 6
(B) 19
(C) 24
(D) 165
(E) more than 200
A2. The number 7425 is factored into prime factors $7425=3^{3} \cdot 5^{2} \cdot 11$. We calculate the number of divisors $4 \cdot 3 \cdot 2=24$.