65859243425 has 6 divisors (see below), whose sum is σ = 81665461878. Its totient is φ = 52687394720.

The previous prime is 65859243421. The next prime is 65859243433. The reversal of 65859243425 is 52434295856.

It can be written as a sum of positive squares in 3 ways, for example, as 10168907281 + 55690336144 = 100841^2 + 235988^2 .

It is not a de Polignac number, because 65859243425 - 2² = 65859243421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65859243421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1317184844 + ... + 1317184893.

It is an arithmetic number, because the mean of its divisors is an integer number (13610910313).

Almost surely, 2^65859243425 is an apocalyptic number.

It is an amenable number.

65859243425 is a deficient number, since it is larger than the sum of its proper divisors (15806218453).

65859243425 is a wasteful number, since it uses less digits than its factorization.

65859243425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634369747 (or 2634369742 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 53.

The spelling of 65859243425 in words is "sixty-five billion, eight hundred fifty-nine million, two hundred forty-three thousand, four hundred twenty-five".