520425035663 has 4 divisors (see below), whose sum is σ = 560457730728. Its totient is φ = 480392340600.

The previous prime is 520425035651. The next prime is 520425035719. The reversal of 520425035663 is 366530524025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520425035663 - 2⁸ = 520425035407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520425035663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520425037663) 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, 20016347513 + ... + 20016347538.

It is an arithmetic number, because the mean of its divisors is an integer number (140114432682).

Almost surely, 2^520425035663 is an apocalyptic number.

520425035663 is a deficient number, since it is larger than the sum of its proper divisors (40032695065).

520425035663 is a wasteful number, since it uses less digits than its factorization.

520425035663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40032695064.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 520425035663 its reverse (366530524025), we get a palindrome (886955559688).

The spelling of 520425035663 in words is "five hundred twenty billion, four hundred twenty-five million, thirty-five thousand, six hundred sixty-three".