865225658201 has 24 divisors (see below), whose sum is σ = 933616373760. Its totient is φ = 801564268032.

The previous prime is 865225658177. The next prime is 865225658333. The reversal of 865225658201 is 102856522568.

It is not a de Polignac number, because 865225658201 - 2¹⁴ = 865225641817 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 865225658201.

It is not an unprimeable number, because it can be changed into a prime (865225651201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5660360 + ... + 5811206.

It is an arithmetic number, because the mean of its divisors is an integer number (38900682240).

Almost surely, 2^865225658201 is an apocalyptic number.

It is an amenable number.

865225658201 is a deficient number, since it is larger than the sum of its proper divisors (68390715559).

865225658201 is a wasteful number, since it uses less digits than its factorization.

865225658201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151193 (or 151176 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 50.

The spelling of 865225658201 in words is "eight hundred sixty-five billion, two hundred twenty-five million, six hundred fifty-eight thousand, two hundred one".