20825894120 has 64 divisors (see below), whose sum is σ = 48704371200. Its totient is φ = 8004890880.

The previous prime is 20825894093. The next prime is 20825894137. The reversal of 20825894120 is 2149852802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202217 + ... + 287303.

It is an arithmetic number, because the mean of its divisors is an integer number (761005800).

Almost surely, 2^20825894120 is an apocalyptic number.

20825894120 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 20825894120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24352185600).

20825894120 is an abundant number, since it is smaller than the sum of its proper divisors (27878477080).

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

20825894120 is a wasteful number, since it uses less digits than its factorization.

20825894120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85338 (or 85334 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 20825894120 in words is "twenty billion, eight hundred twenty-five million, eight hundred ninety-four thousand, one hundred twenty".