The generator matrix

 1  0  0  0  1  1  1  1  1  1  1  1  1  0  1  1 20  1  5  1  1  1  1  1  1  1 20  1 15  1  1  1  1  1  5 20 15  1  1  0  1  1  1  1  1  1  1  1  5  1  1  1  5  1  1  1  1 15  1  1  1  0  1  1
 0  1  0  0 15 20 16 21  1 22 24 12 23  1 13 10  1  4  1  7  7 11 19  2 19  0  1 15  0 23 19  1  4  7  1  1  1 11 20  1 24  2 12  3 22  4  9 21  1 10 15 19  1 11  1  0 24  5  1 16  3  1 12  1
 0  0  1  0 16 22  8  1  2  6  7  5 18  4  5 24  1 13  1 15  9 17  2 22 20  4 21  3  1 14  0 16 11 11 12 15 20  5  8 22 13  7  3 20 17  3 10 14  2  4 18 17  0  4  9 14 14  1  3 20  8 14  4 17
 0  0  0  1  8 22 13 16  5 17 21  6 10 23  3 22 18  7  9  9 18 11 13 12 10 11 22 19  1  3 18  2 10 21 10 21 23  7  6 24 24  6  3 15 20 20  7 13 16 24 12 17 19  1 17 10  0 24  1 24  4 19 24 14

generates a code of length 64 over Z25 who´s minimum homogenous weight is 236.

Homogenous weight enumerator: w(x)=1x^0+1280x^236+1220x^237+600x^238+2020x^239+2484x^240+5460x^241+4880x^242+2440x^243+5760x^244+6416x^245+13780x^246+10320x^247+5180x^248+10660x^249+10392x^250+22080x^251+17600x^252+8040x^253+18220x^254+16996x^255+32300x^256+23480x^257+10400x^258+21480x^259+16940x^260+32040x^261+20940x^262+8560x^263+13820x^264+10408x^265+15080x^266+7860x^267+2280x^268+3040x^269+1920x^270+2980x^271+1200x^272+32x^275+24x^280+8x^290+4x^295

The gray image is a code over GF(5) with n=320, k=8 and d=236.
This code was found by Heurico 1.16 in 222 seconds.