This stat is probably based on the exchange addresses alone not the entire bitcoin addresses
Usually those statistics on Bitcoin owners are much higher than the number of
funded Bitcoin addresses, so it must include exchanges (and ETFs).
No, finding the number of users is not possible, only the number of total bitcoin addresses with value is possible.
55,335,135 funded Bitcoin addresses on January 14, 2026
21,555,149 of those start with 1
6,388,369 of those start with 3
22,594,205 of those start with bc1q
4,741,216 of those start with bc1p