The underlying perl library natively handles strings fine - just change '%25d' to '%25s':

  zen% perl -MMath::BigInt -e '$i = Math::BigInt->new("123_456_789_000
+_000"); printf "%025s\n", $i'
  0000000000123456789000000
  zen%

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Hugo

In reply to Re^3: Math::BigInt and Leading Zeros by hv
in thread Math::BigInt and Leading Zeros by aplonis

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