656211525523 has 2 divisors, whose sum is σ = 656211525524. Its totient is φ = 656211525522.

The previous prime is 656211525521. The next prime is 656211525527. The reversal of 656211525523 is 325525112656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656211525523 - 2¹ = 656211525521 is a prime.

It is a super-2 number, since 2×656211525523² (a number of 24 digits) contains 22 as substring.

Together with 656211525521, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 656211525523.

It is not a weakly prime, because it can be changed into another prime (656211525521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328105762761 + 328105762762.

It is an arithmetic number, because the mean of its divisors is an integer number (328105762762).

Almost surely, 2^656211525523 is an apocalyptic number.

656211525523 is a deficient number, since it is larger than the sum of its proper divisors (1).

656211525523 is an equidigital number, since it uses as much as digits as its factorization.

656211525523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 43.

The spelling of 656211525523 in words is "six hundred fifty-six billion, two hundred eleven million, five hundred twenty-five thousand, five hundred twenty-three".