16425645912 has 320 divisors, whose sum is σ = 51368856000. Its totient is φ = 4870886400.

The previous prime is 16425645881. The next prime is 16425645919. The reversal of 16425645912 is 21954652461.

16425645912 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 56 + 4 + 591 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16425645919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 47064714 + ... + 47065062.

It is an arithmetic number, because the mean of its divisors is an integer number (160527675).

Almost surely, 2^16425645912 is an apocalyptic number.

16425645912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16425645912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25684428000).

16425645912 is an abundant number, since it is smaller than the sum of its proper divisors (34943210088).

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

16425645912 is a wasteful number, since it uses less digits than its factorization.

16425645912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 555 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 16425645912 in words is "sixteen billion, four hundred twenty-five million, six hundred forty-five thousand, nine hundred twelve".