1325073613 has 4 divisors (see below), whose sum is σ = 1325173500. Its totient is φ = 1324973728.

The previous prime is 1325073611. The next prime is 1325073697. The reversal of 1325073613 is 3163705231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 490268164 + 834805449 = 22142^2 + 28893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325073613 - 2¹ = 1325073611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325073611) 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 3 ways as a sum of consecutive naturals, for example, 26320 + ... + 57817.

It is an arithmetic number, because the mean of its divisors is an integer number (331293375).

Almost surely, 2^1325073613 is an apocalyptic number.

It is an amenable number.

1325073613 is a deficient number, since it is larger than the sum of its proper divisors (99887).

1325073613 is an equidigital number, since it uses as much as digits as its factorization.

1325073613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99886.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 1325073613 is about 36401.5605846782. The cubic root of 1325073613 is about 1098.3649573743.

Adding to 1325073613 its reverse (3163705231), we get a palindrome (4488778844).

The spelling of 1325073613 in words is "one billion, three hundred twenty-five million, seventy-three thousand, six hundred thirteen".