22222425540 has 192 divisors, whose sum is σ = 72111513600. Its totient is φ = 5008464384.

The previous prime is 22222425523. The next prime is 22222425553. The reversal of 22222425540 is 4552422222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22222425498 and 22222425507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10739626 + ... + 10741694.

It is an arithmetic number, because the mean of its divisors is an integer number (375580800).

Almost surely, 2^22222425540 is an apocalyptic number.

22222425540 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 22222425540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36055756800).

22222425540 is an abundant number, since it is smaller than the sum of its proper divisors (49889088060).

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

22222425540 is a wasteful number, since it uses less digits than its factorization.

22222425540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 22222425540 its reverse (4552422222), we get a palindrome (26774847762).

The spelling of 22222425540 in words is "twenty-two billion, two hundred twenty-two million, four hundred twenty-five thousand, five hundred forty".