2025 is not a realistic timetable. First they should send robots to set up a base, complete with robotic factory to produce a city using indigenous materials. This will give them experience in dealing with the Martian environment. This would take a minimum of a century to do right, because they would need to produce almost everything using Martian materials.
Right now the best that they have been able to do is send a robotic golf cart to Mars to drive around and take pretty pictures. The technology just isn't there yet for a Martian colony, and won't be for a long time to come.