Concentration

A student titrates 25.0 $cm^3$ of 0.100 $mol\,dm^{-3}$ hydrochloric acid with sodium hydroxide solution of concentration 0.250 $mol\,dm^{-3}$.

The equation is $HCl + NaOH \rightarrow NaCl + H_2O$.

What volume of sodium hydroxide solution is needed for complete neutralisation?