Out of memmory error while building to android

I am getting out of memory while building to android and then my build fails.

Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130828-1532)
           Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
       System Model: System Product Name
               BIOS: BIOS Date: 04/27/12 16:16:00 Ver: 34.02
          Processor: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~3.3GHz
             Memory: 12288MB RAM
Available OS Memory: 12186MB RAM
          Page File: 8128MB used, 8024MB available
        Windows Dir: C:\Windows
    DirectX Version: DirectX 11
DX Setup Parameters: Not found
   User DPI Setting: Using System DPI
 System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
     DxDiag Version: 6.01.7601.17514 32bit Unicode

  Card name: NVIDIA GeForce GTX 660
       Manufacturer: NVIDIA
          Chip type: GeForce GTX 660
           DAC type: Integrated RAMDAC
         Device Key: Enum\PCI\VEN_10DE&DEV_11C0&SUBSYS_128119DA&REV_A1
     Display Memory: 3728 MB
   Dedicated Memory: 1988 MB
      Shared Memory: 1740 MB
       Current Mode: 1920 x 1080 (32 bit) (60Hz)
       Monitor Name: Generic PnP Monitor
      Monitor Model: D2342P
         Monitor Id: GSM5840
        Native Mode: 1920 x 1080(p) (60.000Hz)
        Output Type: HD15