1331013225 has 24 divisors (see below), whose sum is σ = 2216688480. Its totient is φ = 704686720.

The previous prime is 1331013209. The next prime is 1331013239. The reversal of 1331013225 is 5223101331.

It is not a de Polignac number, because 1331013225 - 2⁴ = 1331013209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54495 + ... + 75044.

It is an arithmetic number, because the mean of its divisors is an integer number (92362020).

Almost surely, 2^1331013225 is an apocalyptic number.

1331013225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331013225 is a deficient number, since it is larger than the sum of its proper divisors (885675255).

1331013225 is a wasteful number, since it uses less digits than its factorization.

1331013225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129689 (or 129684 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1331013225 is about 36483.0539428924. The cubic root of 1331013225 is about 1100.0036432386.

Adding to 1331013225 its reverse (5223101331), we get a palindrome (6554114556).

The spelling of 1331013225 in words is "one billion, three hundred thirty-one million, thirteen thousand, two hundred twenty-five".