425843220565 has 32 divisors (see below), whose sum is σ = 605199847680. Its totient is φ = 281448566784.

The previous prime is 425843220529. The next prime is 425843220637. The reversal of 425843220565 is 565022348524.

It is a de Polignac number, because none of the positive numbers 2^k-425843220565 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 222094 + ... + 949216.

It is an arithmetic number, because the mean of its divisors is an integer number (18912495240).

Almost surely, 2^425843220565 is an apocalyptic number.

It is an amenable number.

425843220565 is a deficient number, since it is larger than the sum of its proper divisors (179356627115).

425843220565 is a wasteful number, since it uses less digits than its factorization.

425843220565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727741.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 425843220565 in words is "four hundred twenty-five billion, eight hundred forty-three million, two hundred twenty thousand, five hundred sixty-five".