22523153225 has 12 divisors (see below), whose sum is σ = 27932176140. Its totient is φ = 18016286400.

The previous prime is 22523153221. The next prime is 22523153243. The reversal of 22523153225 is 52235132522.

It can be written as a sum of positive squares in 6 ways, for example, as 297114169 + 22226039056 = 17237^2 + 149084^2 .

It is not a de Polignac number, because 22523153225 - 2² = 22523153221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22523153191 and 22523153200.

It is not an unprimeable number, because it can be changed into a prime (22523153221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166991 + ... + 270059.

It is an arithmetic number, because the mean of its divisors is an integer number (2327681345).

Almost surely, 2^22523153225 is an apocalyptic number.

22523153225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22523153225 is a deficient number, since it is larger than the sum of its proper divisors (5409022915).

22523153225 is a wasteful number, since it uses less digits than its factorization.

22523153225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111820 (or 111815 counting only the distinct ones).

The product of its digits is 36000, while the sum is 32.

Adding to 22523153225 its reverse (52235132522), we get a palindrome (74758285747).

The spelling of 22523153225 in words is "twenty-two billion, five hundred twenty-three million, one hundred fifty-three thousand, two hundred twenty-five".