1331974225 has 12 divisors (see below), whose sum is σ = 1748804364. Its totient is φ = 1002897920.

The previous prime is 1331974187. The next prime is 1331974247. The reversal of 1331974225 is 5224791331.

It can be written as a sum of positive squares in 6 ways, for example, as 12759184 + 1319215041 = 3572^2 + 36321^2 .

It is not a de Polignac number, because 1331974225 - 2¹³ = 1331966033 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 1566604 + ... + 1567453.

It is an arithmetic number, because the mean of its divisors is an integer number (145733697).

Almost surely, 2^1331974225 is an apocalyptic number.

It is an amenable number.

1331974225 is a deficient number, since it is larger than the sum of its proper divisors (416830139).

1331974225 is a wasteful number, since it uses less digits than its factorization.

1331974225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134084 (or 3134079 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 1331974225 is about 36496.2220647562. Note that the first 3 decimals coincide. The cubic root of 1331974225 is about 1100.2683160887.

The spelling of 1331974225 in words is "one billion, three hundred thirty-one million, nine hundred seventy-four thousand, two hundred twenty-five".