20425426176 has 144 divisors (see below), whose sum is σ = 55959160320. Its totient is φ = 6611220480.

The previous prime is 20425426163. The next prime is 20425426183. The reversal of 20425426176 is 67162452402.

It is a congruent 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, 3758181 + ... + 3763611.

It is an arithmetic number, because the mean of its divisors is an integer number (388605280).

Almost surely, 2^20425426176 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 20425426176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27979580160).

20425426176 is an abundant number, since it is smaller than the sum of its proper divisors (35533734144).

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

20425426176 is an equidigital number, since it uses as much as digits as its factorization.

20425426176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

Adding to 20425426176 its reverse (67162452402), we get a palindrome (87587878578).

The spelling of 20425426176 in words is "twenty billion, four hundred twenty-five million, four hundred twenty-six thousand, one hundred seventy-six".