65256360321725 has 12 divisors (see below), whose sum is σ = 80918537004564. Its totient is φ = 52204668769920.

The previous prime is 65256360321721. The next prime is 65256360321821. The reversal of 65256360321725 is 52712306365256.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 25036753498276 + 40219606823449 = 5003674^2 + 6341893^2 .

It is not a de Polignac number, because 65256360321725 - 2² = 65256360321721 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 (65256360321721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7294664 + ... + 13554513.

It is an arithmetic number, because the mean of its divisors is an integer number (6743211417047).

Almost surely, 2^{65256360321725} is an apocalyptic number.

It is an amenable number.

65256360321725 is a deficient number, since it is larger than the sum of its proper divisors (15662176682839).

65256360321725 is a wasteful number, since it uses less digits than its factorization.

65256360321725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20974384 (or 20974379 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 53.

The spelling of 65256360321725 in words is "sixty-five trillion, two hundred fifty-six billion, three hundred sixty million, three hundred twenty-one thousand, seven hundred twenty-five".