1328424763825 has 6 divisors (see below), whose sum is σ = 1647246707174. Its totient is φ = 1062739811040.

The previous prime is 1328424763777. The next prime is 1328424763829. The reversal of 1328424763825 is 5283674248231.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 64601372224 + 1263823391601 = 254168^2 + 1124199^2 .

It is not a de Polignac number, because 1328424763825 - 2⁹ = 1328424763313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328424763829) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26568495252 + ... + 26568495301.

Almost surely, 2^{1328424763825} is an apocalyptic number.

It is an amenable number.

1328424763825 is a deficient number, since it is larger than the sum of its proper divisors (318821943349).

1328424763825 is an equidigital number, since it uses as much as digits as its factorization.

1328424763825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53136990563 (or 53136990558 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 55.

The spelling of 1328424763825 in words is "one trillion, three hundred twenty-eight billion, four hundred twenty-four million, seven hundred sixty-three thousand, eight hundred twenty-five".