What is your retirement age?  
 What’s the inheritance wealth u would be getting? 
 How you arrived at the formula? 25 x Annual savings? For ex - if I can only save 100rs/annum, 2500 would be good for me?

In western world they follow 4% withdrawal rule that means if you withdraw 4% every year and you have saved 25 X annual expenses you can sustain forever. In India this might not help considering the inflation and other things. 
  
 I think over here 50X or something in that range might be safe.

Project manager

Thanks for this info! I can still see some finance youtube gurus telling people to save 25x annual expenses. They are ignoring the inflation part & copying the same formula.

Product Manager

What is your retirement plan? I found 25X annual saving rule for developed economies where inflation is stable. 

Any thoughts on this?

Retirement planning