Final answer:
The number described by the prime factorization 3² · 5² is 225, which results from multiplying 3 squared (9) by 5 squared (25).
Step-by-step explanation:
The prime factorization given is 32 · 52. This represents the number you get when you multiply 3 squared (which is 9) by 5 squared (which is 25). Therefore, the number described is:
9 × 25 = 225.
So, the number that the prime factorization 32 · 52 describes is 225.