52125865709 has 4 divisors (see below), whose sum is σ = 53807345280. Its totient is φ = 50444386140.

The previous prime is 52125865703. The next prime is 52125865721. The reversal of 52125865709 is 90756852125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52125865709 - 2⁸ = 52125865453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52125865703) 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 in 3 ways as a sum of consecutive naturals, for example, 840739739 + ... + 840739800.

It is an arithmetic number, because the mean of its divisors is an integer number (13451836320).

Almost surely, 2^52125865709 is an apocalyptic number.

It is an amenable number.

52125865709 is a deficient number, since it is larger than the sum of its proper divisors (1681479571).

52125865709 is a wasteful number, since it uses less digits than its factorization.

52125865709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681479570.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 52125865709 in words is "fifty-two billion, one hundred twenty-five million, eight hundred sixty-five thousand, seven hundred nine".