20402225000 has 192 divisors, whose sum is σ = 50115542400. Its totient is φ = 7776160000.

The previous prime is 20402224993. The next prime is 20402225017. The reversal of 20402225000 is 52220402.

It is a self number, because there is not a number n which added to its sum of digits gives 20402225000.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77574869 + ... + 77575131.

It is an arithmetic number, because the mean of its divisors is an integer number (261018450).

Almost surely, 2^20402225000 is an apocalyptic number.

20402225000 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 20402225000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25057771200).

20402225000 is an abundant number, since it is smaller than the sum of its proper divisors (29713317400).

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

20402225000 is a wasteful number, since it uses less digits than its factorization.

20402225000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

Adding to 20402225000 its reverse (52220402), we get a palindrome (20454445402).

The spelling of 20402225000 in words is "twenty billion, four hundred two million, two hundred twenty-five thousand".