1320343525 has 6 divisors (see below), whose sum is σ = 1637226002. Its totient is φ = 1056274800.

The previous prime is 1320343489. The next prime is 1320343553. The reversal of 1320343525 is 5253430231.

It can be written as a sum of positive squares in 3 ways, for example, as 15038884 + 1305304641 = 3878^2 + 36129^2 .

It is not a de Polignac number, because 1320343525 - 2¹⁵ = 1320310757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320343493 and 1320343502.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 26406846 + ... + 26406895.

Almost surely, 2^1320343525 is an apocalyptic number.

It is an amenable number.

1320343525 is a deficient number, since it is larger than the sum of its proper divisors (316882477).

1320343525 is an equidigital number, since it uses as much as digits as its factorization.

1320343525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52813751 (or 52813746 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 1320343525 is about 36336.5315488421. The cubic root of 1320343525 is about 1097.0564622413.

Adding to 1320343525 its reverse (5253430231), we get a palindrome (6573773756).

The spelling of 1320343525 in words is "one billion, three hundred twenty million, three hundred forty-three thousand, five hundred twenty-five".