Determine HCl Concentration from Titration

In a laboratory, a student is conducting a titration experiment where they need to determine the concentration of hydrochloric acid (HCl) in a solution. They know that the titrant is a 0.1 M sodium hydroxide (NaOH) solution.

During the titration, it takes 25.0 mL of the NaOH solution to reach the endpoint. The student remembers that the reaction between HCl and NaOH is a strong acid-strong base neutralization that can be represented by the following balanced equation:

HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)

Using this information, what is the concentration of the HCl solution in moles per liter (M)?