225673989 has 16 divisors (see below), whose sum is σ = 310951872. Its totient is φ = 145473408.

The previous prime is 225673979. The next prime is 225674003. The reversal of 225673989 is 989376522.

It is not a de Polignac number, because 225673989 - 2⁵ = 225673957 is a prime.

It is a super-2 number, since 2×225673989² = 101857498622344242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225673909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11857 + ... + 24329.

It is an arithmetic number, because the mean of its divisors is an integer number (19434492).

Almost surely, 2^225673989 is an apocalyptic number.

It is an amenable number.

225673989 is a deficient number, since it is larger than the sum of its proper divisors (85277883).

225673989 is a wasteful number, since it uses less digits than its factorization.

225673989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676.

The product of its digits is 1632960, while the sum is 51.

The square root of 225673989 is about 15022.4495006640. The cubic root of 225673989 is about 608.8269033857.

It can be divided in two parts, 2256 and 73989, that added together give a triangular number (76245 = T₃₉₀).

The spelling of 225673989 in words is "two hundred twenty-five million, six hundred seventy-three thousand, nine hundred eighty-nine".