225600008009 has 4 divisors (see below), whose sum is σ = 233379318660. Its totient is φ = 217820697360.

The previous prime is 225600007993. The next prime is 225600008017. The reversal of 225600008009 is 900800006522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61007518009 + 164592490000 = 246997^2 + 405700^2 .

It is a cyclic number.

It is not a de Polignac number, because 225600008009 - 2⁴ = 225600007993 is a prime.

It is a super-2 number, since 2×225600008009² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225600008059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3889655282 + ... + 3889655339.

It is an arithmetic number, because the mean of its divisors is an integer number (58344829665).

Almost surely, 2^225600008009 is an apocalyptic number.

225600008009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

225600008009 is a deficient number, since it is larger than the sum of its proper divisors (7779310651).

225600008009 is an equidigital number, since it uses as much as digits as its factorization.

225600008009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779310650.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 225600008009 in words is "two hundred twenty-five billion, six hundred million, eight thousand, nine".