22425556 has 6 divisors (see below), whose sum is σ = 39244730. Its totient is φ = 11212776.

The previous prime is 22425553. The next prime is 22425577. The reversal of 22425556 is 65552422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 184900 = 4716^2 + 430^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803191 + ... + 2803198.

Almost surely, 2^22425556 is an apocalyptic number.

It is an amenable number.

22425556 is a deficient number, since it is larger than the sum of its proper divisors (16819174).

22425556 is a wasteful number, since it uses less digits than its factorization.

22425556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606393 (or 5606391 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 22425556 is about 4735.5629021268. The cubic root of 22425556 is about 281.9991113766. Note that the first 3 decimals are identical.

Adding to 22425556 its reverse (65552422), we get a palindrome (87977978).

The spelling of 22425556 in words is "twenty-two million, four hundred twenty-five thousand, five hundred fifty-six".