20425105722 has 16 divisors (see below), whose sum is σ = 46685956032. Its totient is φ = 5835744480.

The previous prime is 20425105721. The next prime is 20425105741. The reversal of 20425105722 is 22750152402.

It is a self number, because there is not a number n which added to its sum of digits gives 20425105722.

It is not an unprimeable number, because it can be changed into a prime (20425105721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243155979 + ... + 243156062.

It is an arithmetic number, because the mean of its divisors is an integer number (2917872252).

Almost surely, 2^20425105722 is an apocalyptic number.

20425105722 is an abundant number, since it is smaller than the sum of its proper divisors (26260850310).

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

20425105722 is a wasteful number, since it uses less digits than its factorization.

20425105722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486312053.

The product of its (nonzero) digits is 11200, while the sum is 30.

The spelling of 20425105722 in words is "twenty billion, four hundred twenty-five million, one hundred five thousand, seven hundred twenty-two".