To convert the binary number 11001 to base 10, you would use the following conversion formula:

(1 * 2^4) + (1 * 2^3) + (0 * 2^2) + (0 * 2^1) + (1 * 2^0) = 16 + 8 + 0 + 0 + 1 = 25

Therefore, the binary number 11001 is equal to 25 in base 10.