520666025903 has 2 divisors, whose sum is σ = 520666025904. Its totient is φ = 520666025902.

The previous prime is 520666025857. The next prime is 520666025941. The reversal of 520666025903 is 309520666025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520666025903 - 2¹⁴ = 520666009519 is a prime.

It is a super-2 number, since 2×520666025903² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520666025953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260333012951 + 260333012952.

It is an arithmetic number, because the mean of its divisors is an integer number (260333012952).

Almost surely, 2^520666025903 is an apocalyptic number.

520666025903 is a deficient number, since it is larger than the sum of its proper divisors (1).

520666025903 is an equidigital number, since it uses as much as digits as its factorization.

520666025903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 520666025903 in words is "five hundred twenty billion, six hundred sixty-six million, twenty-five thousand, nine hundred three".