How long does a star 25 times the Sun's mass typically remain on the main sequence?

Answer

~7 Million Years

Stars significantly more massive than the Sun exhaust their fuel much faster; a star 25 times the mass of the Sun might only last approximately 7 million years, compared to the Sun's 10 billion year main sequence life.

How long does a star 25 times the Sun's mass typically remain on the main sequence?
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