To analyze the sum of \( \sqrt{25} \) and \( \frac{1}{8} \), we first simplify \( \sqrt{25} \):
\[ \sqrt{25} = 5 \]
Now we need to evaluate the sum:
\[ 5 + \frac{1}{8} \]
To add these two numbers, we can convert \( 5 \) into a fraction with a common denominator:
\[ 5 = \frac{40}{8} \]
Now we can add them:
\[ \frac{40}{8} + \frac{1}{8} = \frac{41}{8} \]
Since \( \frac{41}{8} \) is a fraction, it is a rational number.
So the correct answer is:
Rational, because both addends are rational.