The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1 2a^2+2  1  1  1  1  1  1  1  1  1  1
 0  1  0  1  a a^2 3a+3 a^2+3a a^2+3a+3 a^2+2a+1 2a^2+2 2a^2+3 a+2 a^2+2  1 3a^2+3a+1  2 2a^2+2a+3 a+3 3a^2+2 3a^2+3a+2 2a^2+3a+1 3a^2+a+1 3a^2+3 2a^2+3a+2
 0  0  1 a^2+2a+1  a 3a^2+3a+2  1 a^2+3a+3 2a^2+3a+1 a^2  3 a^2+a+3 2a^2+2 3a^2+2 a^2+2a+3 2a^2+2a+1 a+3 2a^2+a 3a^2+2a+1 2a a^2+3a+2 3a 3a^2+2a a^2+3a+1 3a^2+a

generates a code of length 25 over GR(64,4) who´s minimum homogenous weight is 162.

Homogenous weight enumerator: w(x)=1x^0+4032x^162+12768x^163+714x^168+24192x^170+42560x^171+35840x^175+3304x^176+57792x^178+80864x^179+7x^192+70x^200

The gray image is a code over GF(8) with n=200, k=6 and d=162.
This code was found by Heurico 1.16 in 3.57 seconds.