For example, the number 10258 should read 85201 when flipped upside down. This is akin to what would happen with these digits on a 7-segment LED display (although strictly speaking the 1 would switch sides when flipped upside down). I'd prefer if it weren't literally a replica of a 7-segment display and instead looked more like a traditional (probably sans serif) font.
To clarify in response to some of the questions given in response, I'm looking for a font that depicts the digits 0 through 9 as traditional Arabic numerals. The goal is that if you take the depiction of the digits 0, 1, 2, 5, or 8 and rotate it 180 degrees you get an image identical to the original digit before rotation. The digits 1 would presumably be a simple vertical line, the 0 a generally elliptical shape with 180 degree rotational symmetry, and so on. In many fonts the upper and lower halves of an 8 are often slightly different in size or shape and here you'd want a font that depicts the 8's upper and lower halves the same when rotated 180 degrees. The greatest variance from traditional fonts would be for the 2 and 5, which are normally not rotationally symmetric whereas I'd like something similar to an S shape for the 5 and the same, mirrored, for the 2.