Should i file taxes?

If my social security disability benefit is less than 10 k and I won 1000 scratch off ticket in the lotto do I need to file taxes?  My understanding is that you have to make 25 k on all earned income if you file as a single person and 32 k if filing jointly to declare taxes.  Is this information correct? Can someone help me and post. Should I file or not? Thanks. Waiting for reply.