1131141225 has 12 divisors (see below), whose sum is σ = 1870153616. Its totient is φ = 603275280.

The previous prime is 1131141217. The next prime is 1131141229. The reversal of 1131141225 is 5221411311.

It is not a de Polignac number, because 1131141225 - 2³ = 1131141217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131141229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7540867 + ... + 7541016.

Almost surely, 2^1131141225 is an apocalyptic number.

1131141225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131141225 is a deficient number, since it is larger than the sum of its proper divisors (739012391).

1131141225 is a wasteful number, since it uses less digits than its factorization.

1131141225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15081896 (or 15081891 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1131141225 is about 33632.4430423958. The cubic root of 1131141225 is about 1041.9309617010.

Adding to 1131141225 its reverse (5221411311), we get a palindrome (6352552536).

The spelling of 1131141225 in words is "one billion, one hundred thirty-one million, one hundred forty-one thousand, two hundred twenty-five".