1331134225 has 24 divisors (see below), whose sum is σ = 1681256480. Its totient is φ = 1045249920.

The previous prime is 1331134213. The next prime is 1331134297. The reversal of 1331134225 is 5224311331.

It is a happy number.

It is not a de Polignac number, because 1331134225 - 2¹⁷ = 1331003153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1331134225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523006 + ... + 525544.

Almost surely, 2^1331134225 is an apocalyptic number.

It is an amenable number.

1331134225 is a deficient number, since it is larger than the sum of its proper divisors (350122255).

1331134225 is a wasteful number, since it uses less digits than its factorization.

1331134225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929 (or 2924 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1331134225 is about 36484.7122093624. The cubic root of 1331134225 is about 1100.0369753411.

Adding to 1331134225 its reverse (5224311331), we get a palindrome (6555445556).

The spelling of 1331134225 in words is "one billion, three hundred thirty-one million, one hundred thirty-four thousand, two hundred twenty-five".