425163235646 has 16 divisors (see below), whose sum is σ = 642776238720. Its totient is φ = 210906600600.

The previous prime is 425163235643. The next prime is 425163235747. The reversal of 425163235646 is 646532361524.

It is a super-2 number, since 2×425163235646² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425163235646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425163235643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123626 + ... + 930381.

It is an arithmetic number, because the mean of its divisors is an integer number (40173514920).

Almost surely, 2^425163235646 is an apocalyptic number.

425163235646 is a deficient number, since it is larger than the sum of its proper divisors (217613003074).

425163235646 is a wasteful number, since it uses less digits than its factorization.

425163235646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055599.

The product of its digits is 3110400, while the sum is 47.

The spelling of 425163235646 in words is "four hundred twenty-five billion, one hundred sixty-three million, two hundred thirty-five thousand, six hundred forty-six".