19925060688 has 120 divisors (see below), whose sum is σ = 60134354280. Its totient is φ = 6122373120.

The previous prime is 19925060671. The next prime is 19925060693. The reversal of 19925060688 is 88606052991.

It is a happy number.

19925060688 is a `hidden beast` number, since 1 + 9 + 9 + 25 + 0 + 606 + 8 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 47444544 + 19877616144 = 6888^2 + 140988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1432648 + ... + 1446488.

It is an arithmetic number, because the mean of its divisors is an integer number (501119619).

Almost surely, 2^19925060688 is an apocalyptic number.

19925060688 is a gapful number since it is divisible by the number (18) 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 19925060688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30067177140).

19925060688 is an abundant number, since it is smaller than the sum of its proper divisors (40209293592).

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

19925060688 is a wasteful number, since it uses less digits than its factorization.

19925060688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14637 (or 14628 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 19925060688 in words is "nineteen billion, nine hundred twenty-five million, sixty thousand, six hundred eighty-eight".