1325320613320 has 96 divisors (see below), whose sum is σ = 3279016553400. Its totient is φ = 481741793280.

The previous prime is 1325320613317. The next prime is 1325320613321. The reversal of 1325320613320 is 233160235231.

It can be written as a sum of positive squares in 4 ways, for example, as 731302046244 + 594018567076 = 855162^2 + 770726^2 .

It is a super-2 number, since 2×1325320613320² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325320613321) by changing a digit.

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, 12322336 + ... + 12429424.

Almost surely, 2^{1325320613320} is an apocalyptic number.

1325320613320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325320613320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639508276700).

1325320613320 is an abundant number, since it is smaller than the sum of its proper divisors (1953695940080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1325320613320 is a wasteful number, since it uses less digits than its factorization.

1325320613320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109679 (or 109664 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 1325320613320 its reverse (233160235231), we get a palindrome (1558480848551).

The spelling of 1325320613320 in words is "one trillion, three hundred twenty-five billion, three hundred twenty million, six hundred thirteen thousand, three hundred twenty".