425425126566 has 64 divisors (see below), whose sum is σ = 937661826816. Its totient is φ = 127603344000.

The previous prime is 425425126447. The next prime is 425425126571. The reversal of 425425126566 is 665621524524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30636661 + ... + 30650543.

It is an arithmetic number, because the mean of its divisors is an integer number (14650966044).

Almost surely, 2^425425126566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425425126566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468830913408).

425425126566 is an abundant number, since it is smaller than the sum of its proper divisors (512236700250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425425126566 is a wasteful number, since it uses less digits than its factorization.

425425126566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597.

The product of its digits is 3456000, while the sum is 48.

The spelling of 425425126566 in words is "four hundred twenty-five billion, four hundred twenty-five million, one hundred twenty-six thousand, five hundred sixty-six".