The part number is CAP CER 270PF 250V C0G/NP0 2225. This refers to a specific ceramic capacitor with the following characteristics: capacitance value of 270 picofarads, tolerance of ±5 percent, maximum voltage rating of 250 volts, and a case size designation of 2225 or metric size 5763. The capacitor is categorized as C0G/NP0 type, also known as 1B, which signifies its specific dielectric properties.