Washington, October 12 (RHC)-- U.S. President Barack Obama says it is not surprising that at this early stage of presidential election process Donald Trump is receiving a lot of attention, but he cannot win the White House in 2016.

"He knows how to get attention. He is, you know, the classic reality TV character," Obama said of Trump in an interview broadcast on CBS News on Sunday. "But I don't think he'll end up being president of the United States."

Trump’s presidential campaign has been marked by controversial statements, including disparaging remarks about Mexican immigrants. Back in August, the TV personality and business magnate said he was willing to spend $1 billion on his campaign if that is what it takes to win the White House.

As many as 15 Republicans are seeking their party’s nomination for president but only Trump, Jeb Bush, Marco Rubio and Ted Cruz are considered serious contenders.