865725558012 has 120 divisors (see below), whose sum is σ = 2609378757216. Its totient is φ = 245161147392.

The previous prime is 865725558011. The next prime is 865725558017. The reversal of 865725558012 is 210855527568.

865725558012 is a `hidden beast` number, since 8 + 6 + 5 + 7 + 2 + 55 + 580 + 1 + 2 = 666.

865725558012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 865725558012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865725558011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1432713 + ... + 1945280.

Almost surely, 2^865725558012 is an apocalyptic number.

It is an amenable number.

865725558012 is an abundant number, since it is smaller than the sum of its proper divisors (1743653199204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865725558012 is a wasteful number, since it uses less digits than its factorization.

865725558012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378129 (or 3378118 counting only the distinct ones).

The product of its (nonzero) digits is 6720000, while the sum is 54.

The spelling of 865725558012 in words is "eight hundred sixty-five billion, seven hundred twenty-five million, five hundred fifty-eight thousand, twelve".