No, it is rational.
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169 is the ratio of 169 to 1 ... nice and rational.
The square root of 169 is 13 which is a rational and also a Prime number
169 + 169 = 338
25% of 169 = 42.25= 25% * 169 = 25%/100% * 169 = 0.25 * 169 = 42.25
169 times -1 = -169