22122143525 has 18 divisors (see below), whose sum is σ = 27514482450. Its totient is φ = 17644311520.

The previous prime is 22122143509. The next prime is 22122143543. The reversal of 22122143525 is 52534122122.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2566638244 + 19555505281 = 50662^2 + 139841^2 .

It is not a de Polignac number, because 22122143525 - 2⁴ = 22122143509 is a prime.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 3006551 + ... + 3013899.

Almost surely, 2^22122143525 is an apocalyptic number.

22122143525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22122143525 is a deficient number, since it is larger than the sum of its proper divisors (5392338925).

22122143525 is an frugal number, since it uses more digits than its factorization.

22122143525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053 (or 7701 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

Adding to 22122143525 its reverse (52534122122), we get a palindrome (74656265647).

The spelling of 22122143525 in words is "twenty-two billion, one hundred twenty-two million, one hundred forty-three thousand, five hundred twenty-five".