22162031325225 has 144 divisors (see below), whose sum is σ = 43744757906304. Its totient is φ = 10635738240000.

The previous prime is 22162031325209. The next prime is 22162031325227. The reversal of 22162031325225 is 52252313026122.

It is a happy number.

22162031325225 is a `hidden beast` number, since 2 + 2 + 1 + 620 + 3 + 1 + 3 + 2 + 5 + 2 + 25 = 666.

It is not a de Polignac number, because 22162031325225 - 2⁴ = 22162031325209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22162031325225.

It is not an unprimeable number, because it can be changed into a prime (22162031325227) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1018137292 + ... + 1018159058.

It is an arithmetic number, because the mean of its divisors is an integer number (303783041016).

Almost surely, 2^{22162031325225} is an apocalyptic number.

22162031325225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22162031325225 is a deficient number, since it is larger than the sum of its proper divisors (21582726581079).

22162031325225 is a wasteful number, since it uses less digits than its factorization.

22162031325225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25968 (or 25960 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 22162031325225 in words is "twenty-two trillion, one hundred sixty-two billion, thirty-one million, three hundred twenty-five thousand, two hundred twenty-five".