175 (one hundred [and] seventy-five) is the natural number following 174 and preceding 176.
In mathematics Raising the decimal digits of 175 to the powers of successive integers produces 175 back again:
175 is a figurate number for a rhombic dodecahedron, the difference of two consecutive fourth powers: It is also a decagonal number and a decagonal pyramid number, the smallest number after 1 that has both properties.
See also The year AD 175 or 175 BC List of highways numbered 175
References