22510225225 has 24 divisors (see below), whose sum is σ = 28094382648. Its totient is φ = 17891328000.

The previous prime is 22510225223. The next prime is 22510225303. The reversal of 22510225225 is 52252201522.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 133356304 + 22376868921 = 11548^2 + 149589^2 .

It is not a de Polignac number, because 22510225225 - 2¹ = 22510225223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22510225193 and 22510225202.

It is not an unprimeable number, because it can be changed into a prime (22510225223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2572057 + ... + 2580793.

It is an arithmetic number, because the mean of its divisors is an integer number (1170599277).

Almost surely, 2^22510225225 is an apocalyptic number.

22510225225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22510225225 is a deficient number, since it is larger than the sum of its proper divisors (5584157423).

22510225225 is a wasteful number, since it uses less digits than its factorization.

22510225225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405 (or 9400 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 22510225225 its reverse (52252201522), we get a palindrome (74762426747).

The spelling of 22510225225 in words is "twenty-two billion, five hundred ten million, two hundred twenty-five thousand, two hundred twenty-five".