520666025882 has 4 divisors (see below), whose sum is σ = 780999038826. Its totient is φ = 260333012940.

The previous prime is 520666025857. The next prime is 520666025903. The reversal of 520666025882 is 288520666025.

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

It can be written as a sum of positive squares in only one way, i.e., 315483299041 + 205182726841 = 561679^2 + 452971^2 .

It is a super-2 number, since 2×520666025882² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520666025882.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130166506469 + ... + 130166506472.

Almost surely, 2^520666025882 is an apocalyptic number.

520666025882 is a deficient number, since it is larger than the sum of its proper divisors (260333012944).

520666025882 is a wasteful number, since it uses less digits than its factorization.

520666025882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260333012943.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 520666025882 in words is "five hundred twenty billion, six hundred sixty-six million, twenty-five thousand, eight hundred eighty-two".