The goal of MD5 development was to create a function/algorithm that quickly and without much computational power creates a unique digest for each unique string (message). From this digest, it must not be possible (without using brute force or rainbow tables) to reconstruct the original message backwards. The MD5 hash is 128 bits long and is represented by 32 characters.
Recommendation: if you are creating your own application and need to create a digest of some text, consider using other encryption functions that have not been found to have any security flaws.