1325520524213 has 4 divisors (see below), whose sum is σ = 1325525579808. Its totient is φ = 1325515468620.

The previous prime is 1325520524189. The next prime is 1325520524257. The reversal of 1325520524213 is 3124250255231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1325520524213 - 2³⁰ = 1324446782389 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 (1325520523213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111681 + ... + 2666502.

It is an arithmetic number, because the mean of its divisors is an integer number (331381394952).

Almost surely, 2^{1325520524213} is an apocalyptic number.

It is an amenable number.

1325520524213 is a deficient number, since it is larger than the sum of its proper divisors (5055595).

1325520524213 is an equidigital number, since it uses as much as digits as its factorization.

1325520524213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055594.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 1325520524213 its reverse (3124250255231), we get a palindrome (4449770779444).

The spelling of 1325520524213 in words is "one trillion, three hundred twenty-five billion, five hundred twenty million, five hundred twenty-four thousand, two hundred thirteen".