225689900566 has 16 divisors (see below), whose sum is σ = 372332931264. Its totient is φ = 101948301504.

The previous prime is 225689900461. The next prime is 225689900573. The reversal of 225689900566 is 665009986522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225689900566.

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, 92343255 + ... + 92345698.

It is an arithmetic number, because the mean of its divisors is an integer number (23270808204).

Almost surely, 2^225689900566 is an apocalyptic number.

225689900566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

225689900566 is a deficient number, since it is larger than the sum of its proper divisors (146643030698).

225689900566 is a wasteful number, since it uses less digits than its factorization.

225689900566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184689015.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 225689900566 in words is "two hundred twenty-five billion, six hundred eighty-nine million, nine hundred thousand, five hundred sixty-six".