225205808121806 has 16 divisors (see below), whose sum is σ = 339231490199280. Its totient is φ = 112128848232000.

The previous prime is 225205808121761. The next prime is 225205808121821. The reversal of 225205808121806 is 608121808502522.

225205808121806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48661841 + ... + 53088476.

It is an arithmetic number, because the mean of its divisors is an integer number (21201968137455).

Almost surely, 2^{225205808121806} is an apocalyptic number.

225205808121806 is a deficient number, since it is larger than the sum of its proper divisors (114025682077474).

225205808121806 is a wasteful number, since it uses less digits than its factorization.

225205808121806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101754979.

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 225205808121806 in words is "two hundred twenty-five trillion, two hundred five billion, eight hundred eight million, one hundred twenty-one thousand, eight hundred six".