It depends on the size of the bricks.
3 cement bricks for foot
It depends on the one brick size
Depends on the size of the red brick
The answer will depend on the orientation of the bricks. Are the side-on, end-on, mixed?
There are exactly 6.75 bricks per square foot. Standard modular brick courses 3 bricks per 8" vertically, and 8" per brick horizontally. Therefore, 1 square foot is 1.5 bricks wide x 4.5 bricks high, or 6.75 bricks per square foot. Keep in mind, there are MANY different brick sizes, but this calculation holds true for standard 'modular' brick.
There are 6.27 standard bricks in a square foot. A 25x80 section of wall would require 12540.
If the bricks are in feet then 51/2 bricks would be needed.