Have you ever looked up the definition of a letter?

P:

P is the sixteenth letter of the modern Latin alphabet. Its name in English is spelled pee or occasionally pe (pronounced /piː/).

The Semitic Pe ("mouth"), as well as the Greek Π or π (Pi), and the Etruscan and Latin letters that developed from the former alphabet, all symbolized /p/, a voiceless bilabial plosive.

In English and most other European languages, P is a voiceless bilabial plosive.

Both initial and final Ps can be combined with many other discrete consonants in English words. A common example of assimilation is the tendency of prefixes ending in N to assume an M sound before Ps (such as "in" + "pulse" → "impulse").



A common digraph in English is "ph", which represents the voiceless labiodental fricative /f/, and can be used to transliterate Phi (φ) in loanwords from Greek. In German, the digraph "pf" is common, representing a labial affricate of /pf/.
Those who speak Arabic are usually unaccustomed to pronouncing /p/; they pronounce it as /b/ or /v/ instead.