To solve the expression \( 6.25 \times 10^6 - 4.73 \times 10^6 \), we can factor out \( 10^6 \):
\[ (6.25 - 4.73) \times 10^6 \]
Now, we perform the subtraction:
\[ 6.25 - 4.73 = 1.52 \]
So, the expression becomes:
\[ 1.52 \times 10^6 \]
This is already in scientific notation. Now to express it to two decimal places:
The final answer is:
\[ \boxed{1.52 \times 10^6} \]