Build size weirdly large?

Hello, i am making an Android game, and i noticed the size is not anywhere near what i expected. I have reduced and compressed all in game files, and there is little optimization to do. Still, the final APK size is almost exactly 25MB. I expected it to be much lower since all textures are low res and none of them exceeds 400KB.

Here's the build report:
Uncompressed usage by category:
Textures 2.3 mb 2.4%
Meshes 57.2 kb 0.1%
Animations 8.6 kb 0.0%
Sounds 1.3 mb 1.3%
Shaders 502.6 kb 0.5%
Other Assets 21.5 kb 0.0%
Levels 21.5 kb 0.0%
Scripts 990.5 kb 1.0%
Included DLLs 3.9 mb 4.0%
File headers 9.0 kb 0.0%
Complete size 98.8 mb 100.0%

The question here is where are the other 90,7% that compose the vast majority of the game size?