i can't call on t-mobile phone number +1401414**** from +1425440****

It seems incredibly unlikely that T-Mobile has blocked you from calling one specific number.  If it would a routing issue  it would affect all numbers in that exchange.  I am more inclined to think the issue is with the number you are calling.  Have you tried calling the number from a different number to see if that works?  Can they call you from that number?  What does the message say when you try to call them?