Classify the following numbers into natural, rational, irrational, integer, and complex: 

1, 0, -10, pi, e, root(25), I*pi, root(2), 6/7, 5/6
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Natural: 1
Rational: 1, 0, -10, root(25), 6/7, 5/6
Irrational: pi, e, root(2)
Complex: 1, 0, -10, pi, e, root(25), I*pi, root(2), 6/7, 5/6
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