426664646425 has 12 divisors (see below), whose sum is σ = 530291702016. Its totient is φ = 340539755600.

The previous prime is 426664646413. The next prime is 426664646453. The reversal of 426664646425 is 524646466624.

It is not a de Polignac number, because 426664646425 - 2⁵ = 426664646393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19788049 + ... + 19809598.

It is an arithmetic number, because the mean of its divisors is an integer number (44190975168).

Almost surely, 2^426664646425 is an apocalyptic number.

It is an amenable number.

426664646425 is a deficient number, since it is larger than the sum of its proper divisors (103627055591).

426664646425 is a wasteful number, since it uses less digits than its factorization.

426664646425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39598088 (or 39598083 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 55.

The spelling of 426664646425 in words is "four hundred twenty-six billion, six hundred sixty-four million, six hundred forty-six thousand, four hundred twenty-five".