1131225148 has 12 divisors (see below), whose sum is σ = 1980101200. Its totient is φ = 565481952.

The previous prime is 1131225133. The next prime is 1131225157. The reversal of 1131225148 is 8415221311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11673 + ... + 48976.

Almost surely, 2^1131225148 is an apocalyptic number.

It is an amenable number.

1131225148 is a deficient number, since it is larger than the sum of its proper divisors (848876052).

1131225148 is a wasteful number, since it uses less digits than its factorization.

1131225148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65316 (or 65314 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1131225148 is about 33633.6906687327. The cubic root of 1131225148 is about 1041.9567291318.

Adding to 1131225148 its reverse (8415221311), we get a palindrome (9546446459).

The spelling of 1131225148 in words is "one billion, one hundred thirty-one million, two hundred twenty-five thousand, one hundred forty-eight".