426544636625 has 16 divisors (see below), whose sum is σ = 532373808720. Its totient is φ = 341206156800.

The previous prime is 426544636613. The next prime is 426544636631. The reversal of 426544636625 is 526636445624.

It can be written as a sum of positive squares in 8 ways, for example, as 266397402769 + 160147233856 = 516137^2 + 400184^2 .

It is not a de Polignac number, because 426544636625 - 2¹⁴ = 426544620241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362881 + ... + 1646369.

It is an arithmetic number, because the mean of its divisors is an integer number (33273363045).

Almost surely, 2^426544636625 is an apocalyptic number.

It is an amenable number.

426544636625 is a deficient number, since it is larger than the sum of its proper divisors (105829172095).

426544636625 is a wasteful number, since it uses less digits than its factorization.

426544636625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295541 (or 295531 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 53.

The spelling of 426544636625 in words is "four hundred twenty-six billion, five hundred forty-four million, six hundred thirty-six thousand, six hundred twenty-five".