What are round pills w 925 blank on other side?

Round pills imprinted with "925" on one side and blank on the other are identified as Diphenhydramine Hydrochloride 25 mg, an over-the-counter antihistamine. It is commonly used to relieve symptoms of allergy, hay fever, and the common cold, such as sneezing, runny nose, and itching. Diphenhydramine is also known for its sedative properties and is often used as a sleep aid. Always consult a healthcare professional before using any medication.