20425672608 has 96 divisors (see below), whose sum is σ = 58524016320. Its totient is φ = 6186178560.

The previous prime is 20425672607. The next prime is 20425672609. The reversal of 20425672608 is 80627652402.

It is an interprime number because it is at equal distance from previous prime (20425672607) and next prime (20425672609).

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 20425672608.

It is not an unprimeable number, because it can be changed into a prime (20425672607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434116 + ... + 2442492.

It is an arithmetic number, because the mean of its divisors is an integer number (609625170).

Almost surely, 2^20425672608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20425672608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29262008160).

20425672608 is an abundant number, since it is smaller than the sum of its proper divisors (38098343712).

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

20425672608 is a wasteful number, since it uses less digits than its factorization.

20425672608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10710 (or 10702 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 20425672608 in words is "twenty billion, four hundred twenty-five million, six hundred seventy-two thousand, six hundred eight".