22425423444 has 72 divisors (see below), whose sum is σ = 57224670048. Its totient is φ = 7404471360.

The previous prime is 22425423439. The next prime is 22425423463. The reversal of 22425423444 is 44432452422.

It is a happy number.

22425423444 is a `hidden beast` number, since 2 + 2 + 42 + 542 + 34 + 44 = 666.

It is a super-3 number, since 3×22425423444³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22425423399 and 22425423408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1864819 + ... + 1876805.

It is an arithmetic number, because the mean of its divisors is an integer number (794787084).

Almost surely, 2^22425423444 is an apocalyptic number.

It is an amenable number.

22425423444 is an abundant number, since it is smaller than the sum of its proper divisors (34799246604).

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

22425423444 is a wasteful number, since it uses less digits than its factorization.

22425423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12485 (or 12480 counting only the distinct ones).

The product of its digits is 245760, while the sum is 36.

Adding to 22425423444 its reverse (44432452422), we get a palindrome (66857875866).

The spelling of 22425423444 in words is "twenty-two billion, four hundred twenty-five million, four hundred twenty-three thousand, four hundred forty-four".