Rubio recently invested $$22,500($tax basis$)$ in purchasing a limited partnership interest in which he will have no management rights in the company. His at$-$risk amount is $$16,750.$ In addition, Rubio's share of the limited partnership loss for the year is $$25,250,$ his share of income from a different limited partnership is $$5,375,$ and he has $$42,500$ in wage income and $$11,250$ in long$-$term capital gains.

a$.$ How much of Rubio's $$25,250$ loss is allowed considering only the tax$-$basis loss limitations$?$