1325634801320 has 64 divisors (see below), whose sum is σ = 3028968879120. Its totient is φ = 522050586624.

The previous prime is 1325634801241. The next prime is 1325634801401. The reversal of 1325634801320 is 231084365231.

It can be written as a sum of positive squares in 8 ways, for example, as 676279259044 + 649355542276 = 822362^2 + 805826^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218914 + ... + 2033966.

Almost surely, 2^{1325634801320} is an apocalyptic number.

1325634801320 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 1325634801320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514484439560).

1325634801320 is an abundant number, since it is smaller than the sum of its proper divisors (1703334077800).

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

1325634801320 is a wasteful number, since it uses less digits than its factorization.

1325634801320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815694 (or 815690 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1325634801320 in words is "one trillion, three hundred twenty-five billion, six hundred thirty-four million, eight hundred one thousand, three hundred twenty".