1130531225 has 12 divisors (see below), whose sum is σ = 1421605440. Its totient is φ = 891685200.

The previous prime is 1130531221. The next prime is 1130531251. The reversal of 1130531225 is 5221350311.

It is a happy number.

It is not a de Polignac number, because 1130531225 - 2² = 1130531221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1130531225.

It is not an unprimeable number, because it can be changed into a prime (1130531221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 316685 + ... + 320234.

It is an arithmetic number, because the mean of its divisors is an integer number (118467120).

Almost surely, 2^1130531225 is an apocalyptic number.

It is an amenable number.

1130531225 is a deficient number, since it is larger than the sum of its proper divisors (291074215).

1130531225 is an equidigital number, since it uses as much as digits as its factorization.

1130531225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637000 (or 636995 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1130531225 is about 33623.3731948477. The cubic root of 1130531225 is about 1041.7436310777.

Adding to 1130531225 its reverse (5221350311), we get a palindrome (6351881536).

The spelling of 1130531225 in words is "one billion, one hundred thirty million, five hundred thirty-one thousand, two hundred twenty-five".