52856665825 has 12 divisors (see below), whose sum is σ = 66191202108. Its totient is φ = 41866664000.

The previous prime is 52856665789. The next prime is 52856665843.

52856665825 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 8633940561 + 44222725264 = 92919^2 + 210292^2 .

It is not a de Polignac number, because 52856665825 - 2¹⁹ = 52856141537 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 52856665825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10464142 + ... + 10469191.

It is an arithmetic number, because the mean of its divisors is an integer number (5515933509).

Almost surely, 2^52856665825 is an apocalyptic number.

It is an amenable number.

52856665825 is a deficient number, since it is larger than the sum of its proper divisors (13334536283).

52856665825 is a wasteful number, since it uses less digits than its factorization.

52856665825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20933444 (or 20933439 counting only the distinct ones).

The product of its digits is 34560000, while the sum is 58.

The spelling of 52856665825 in words is "fifty-two billion, eight hundred fifty-six million, six hundred sixty-five thousand, eight hundred twenty-five".