It sounds like you've got some form of synesthesia! I can totally understand what you're saying but there's no way I could apply it to a series of numbers, may

It sounds like you've got some form of synesthesia! I can totally understand what you're saying but there's no way I could apply it to a series of numbers, maybe not even if I practiced. Did you always have this feeling with numbers, or was it practiced at all? It feels like what you're describing is a natural visualization you've developed and it also sounds a lot more powerful than something one might practice.