To determine the type of number resulting from the sum of \( 23 + \sqrt{25} \), let's first calculate \( \sqrt{25} \).
\[ \sqrt{25} = 5 \]
Now we can find the sum:
\[ 23 + \sqrt{25} = 23 + 5 = 28 \]
Now we can categorize the resulting number, 28:
- It is a whole number.
- It is also a rational number since it can be expressed as a fraction (e.g., \( \frac{28}{1} \)).
- It is not an irrational number.
- It is not zero.
Thus, the correct answer corresponds to the type of number that is a whole number.
Therefore, the answer is:
3 (whole number)