8505725701 has 4 divisors (see below), whose sum is σ = 9278973504. Its totient is φ = 7732477900.

The previous prime is 8505725699. The next prime is 8505725731. The reversal of 8505725701 is 1075275058.

8505725701 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8505725701 - 2¹ = 8505725699 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 (8505725731) 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, 386623885 + ... + 386623906.

It is an arithmetic number, because the mean of its divisors is an integer number (2319743376).

Almost surely, 2^8505725701 is an apocalyptic number.

It is an amenable number.

8505725701 is a deficient number, since it is larger than the sum of its proper divisors (773247803).

8505725701 is a wasteful number, since it uses less digits than its factorization.

8505725701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773247802.

The product of its (nonzero) digits is 98000, while the sum is 40.

The square root of 8505725701 is about 92226.4913189264. The cubic root of 8505725701 is about 2041.2856900008.

The spelling of 8505725701 in words is "eight billion, five hundred five million, seven hundred twenty-five thousand, seven hundred one".