16925137920 has 440 divisors, whose sum is σ = 62345790144. Its totient is φ = 4387405824.

The previous prime is 16925137919. The next prime is 16925137969. The reversal of 16925137920 is 2973152961.

It is a happy number.

16925137920 is a `hidden beast` number, since 1 + 6 + 9 + 251 + 379 + 20 = 666.

It is a super-2 number, since 2×16925137920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15344089 + ... + 15345191.

Almost surely, 2^16925137920 is an apocalyptic number.

16925137920 is a gapful number since it is divisible by the number (10) 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 16925137920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31172895072).

16925137920 is an abundant number, since it is smaller than the sum of its proper divisors (45420652224).

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

16925137920 is a wasteful number, since it uses less digits than its factorization.

16925137920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 16925137920 in words is "sixteen billion, nine hundred twenty-five million, one hundred thirty-seven thousand, nine hundred twenty".