From the layout in the photo, I recognize the IC, it's possibly Si4825, or a clone of it. By chance I used the same IC once, for a little toy radio for kids.
The circuit diagram is attached, it's likely that most of the radio portion may be near-identical to the one on your board.
It is quite a nice IC for DIY construction, with zero trimming unlike older radio receiver circuits.
Not great performance, but reasonable enough for a low-cost pocket radio.