No that's for a full GmbH. You can start with an "UG", which realistically needs maybe 1500 EUR to get registered and up and running. Then, a certain percentage of the profit is contributed towards the 25k (of which in turn only 12.5k have to be deposited in cash) each financial year. If the threshold is met, you can convert from UG to GmbH.
You are confusing UG with something like GbR. UG is basically a baby GmbH with constraints of the name of the company and how much money the associates can extract from it (until the company got 25k€ captial and can become a normal GmbH).
This sounds crazy to me. What is the €25k for? Hell, what is the €1.5k for? Is there some advantage to this system when compared to the US one where I can start an LLC for $35 or a C-corp for a couple hundred?