The generator matrix

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

generates a code of length 53 over Z25 who´s minimum homogenous weight is 197.

Homogenous weight enumerator: w(x)=1x^0+300x^197+860x^198+1100x^199+1232x^200+1040x^201+2460x^202+2300x^203+2540x^204+2580x^205+1800x^206+4400x^207+3740x^208+3240x^209+3832x^210+2760x^211+5040x^212+4880x^213+3640x^214+5048x^215+2920x^216+5380x^217+4020x^218+3340x^219+2692x^220+1480x^221+2420x^222+1700x^223+1140x^224+172x^225+20x^230+12x^235+16x^240+12x^245+4x^250+4x^255

The gray image is a code over GF(5) with n=265, k=7 and d=197.
This code was found by Heurico 1.16 in 115 seconds.