Well, I would say, it certainly is not common.. unless you had the privilege to have your parents/family help you financially (hence, no need to work) WHILE you were in college, studying, then I would say no, that isn't "crazy" / wrong in my book... because you were in school, focusing on your studies to better yourself in terms of a FUTURE career.
.....but also, about 80 percent of the time, most college students work at least part time while in college.
If you never were in college and also never worked - then I'd say that is not such a good look.
If you are no longer in college or trade school of some sort, get a job and start getting some experience under your belt..
because by 25 years old, your mid twenties.. YES, then that is going to "crazy" to employers that you have no past job experience.