Bluebulb Projects' The Measure of Things presents:
250 is about one-and-one-fifth times the number of Bones in the Human Body.
In other words, it's 1.210 times the count of Bones in the Human Body, and the count of Bones in the Human Body is 0.8260 times that amount.
(adult, excluding sesamoid bones and ossicles)
The adult human body contains 206 bones. A newborn's body contains more bones — 270 — with unfused bone segments in the legs, arms, head, and face.