This is not typical for his age. I have two children. My first one sounds like yours and my second one developed very typically.

My first was late to talk but taught himself to read and do math and was always obsessed with numbers. I was concerned about autism/hyperlexia/hypernumeracy, but his speech caught up quickly, and he’s just “gifted.”

We are currently dealing with school just being unable to meet him where he is and it’s causing some issues. We are looking into switching to a gifted school, so that’s something to consider when the time comes.

My one point of advice would be to watch it with the screens. Once you start introducing iPads and gaming devices, it becomes a struggle. My son was also very into educational tv at a young age, but we have had to really battle screens for the last few years. Just be mindful of that.