20974925000 has 96 divisors (see below), whose sum is σ = 50205536640. Its totient is φ = 8211000000.

The previous prime is 20974924991. The next prime is 20974925021. The reversal of 20974925000 is 52947902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166075 + ... + 1183925.

It is an arithmetic number, because the mean of its divisors is an integer number (522974340).

Almost surely, 2^20974925000 is an apocalyptic number.

20974925000 is a gapful number since it is divisible by the number (20) 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 20974925000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25102768320).

20974925000 is an abundant number, since it is smaller than the sum of its proper divisors (29230611640).

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

20974925000 is an equidigital number, since it uses as much as digits as its factorization.

20974925000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17929 (or 17905 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 20974925000 in words is "twenty billion, nine hundred seventy-four million, nine hundred twenty-five thousand".