22256422525 has 12 divisors (see below), whose sum is σ = 29221374132. Its totient is φ = 16757776640.

The previous prime is 22256422523. The next prime is 22256422549. The reversal of 22256422525 is 52522465222.

It can be written as a sum of positive squares in 6 ways, for example, as 165842884 + 22090579641 = 12878^2 + 148629^2 .

It is not a de Polignac number, because 22256422525 - 2¹ = 22256422523 is a prime.

It is a super-2 number, since 2×22256422525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22256422523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26183602 + ... + 26184451.

It is an arithmetic number, because the mean of its divisors is an integer number (2435114511).

Almost surely, 2^22256422525 is an apocalyptic number.

22256422525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22256422525 is a deficient number, since it is larger than the sum of its proper divisors (6964951607).

22256422525 is a wasteful number, since it uses less digits than its factorization.

22256422525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52368080 (or 52368075 counting only the distinct ones).

The product of its digits is 192000, while the sum is 37.

Adding to 22256422525 its reverse (52522465222), we get a palindrome (74778887747).

The spelling of 22256422525 in words is "twenty-two billion, two hundred fifty-six million, four hundred twenty-two thousand, five hundred twenty-five".