225818769 has 16 divisors (see below), whose sum is σ = 347785920. Its totient is φ = 128808960.

The previous prime is 225818753. The next prime is 225818773. The reversal of 225818769 is 967818522.

It is not a de Polignac number, because 225818769 - 2⁴ = 225818753 is a prime.

It is a super-2 number, since 2×225818769² = 101988232865350722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225818869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200704 + ... + 201825.

It is an arithmetic number, because the mean of its divisors is an integer number (21736620).

Almost surely, 2^225818769 is an apocalyptic number.

It is an amenable number.

225818769 is a deficient number, since it is larger than the sum of its proper divisors (121967151).

225818769 is a wasteful number, since it uses less digits than its factorization.

225818769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402560.

The product of its digits is 483840, while the sum is 48.

The square root of 225818769 is about 15027.2675160856. The cubic root of 225818769 is about 608.9570721546.

The spelling of 225818769 in words is "two hundred twenty-five million, eight hundred eighteen thousand, seven hundred sixty-nine".