9425385857646 has 96 divisors (see below), whose sum is σ = 23119288028928. Its totient is φ = 2854201328640.

The previous prime is 9425385857603. The next prime is 9425385857647. The reversal of 9425385857646 is 6467585835249.

9425385857646 is a `hidden beast` number, since 9 + 4 + 2 + 5 + 3 + 8 + 5 + 8 + 576 + 46 = 666.

It is a super-2 number, since 2×9425385857646² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9425385857647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7126446 + ... + 8344878.

It is an arithmetic number, because the mean of its divisors is an integer number (240825916968).

Almost surely, 2^{9425385857646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9425385857646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11559644014464).

9425385857646 is an abundant number, since it is smaller than the sum of its proper divisors (13693902171282).

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

9425385857646 is a wasteful number, since it uses less digits than its factorization.

9425385857646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219908 (or 1219896 counting only the distinct ones).

The product of its digits is 1741824000, while the sum is 72.

The spelling of 9425385857646 in words is "nine trillion, four hundred twenty-five billion, three hundred eighty-five million, eight hundred fifty-seven thousand, six hundred forty-six".