As somebody who has run into these memory problems on just about every single game recently, I could chime in.
25 MB is nothing to worry about. I even have a game around 400MB ( in RAM ) that works on iPhones with 1GB of memory, but that is cutting it close. Had problems before adjusting a few things.
Weirdly a couple of other games ran into problems when exported using Construct 3 ( both using runtime 2 and 3 ) even though they were between 100 MB and 250 MB. Changing the background image from 2500 x 1200 to 2048 x 1080 fixed it, but anything under 4096 x 4096 should not be causing problems. There were problems even on Galaxy S6 which has 3GB of memory.
If you are only using Construct 2 and keeping it under 200-300MB seems things should work on most phones.
If using Construct 3 exporter thing seem a little unpredictable. Have no idea if that is because it's a Construct 2 project exported via version 3 that is causing problems, or simply Construct 3's spritesheeting which works differently.