225577789 has 8 divisors (see below), whose sum is σ = 233804120. Its totient is φ = 217463616.

The previous prime is 225577787. The next prime is 225577799. The reversal of 225577789 is 987775522.

It can be written as a sum of positive squares in 4 ways, for example, as 65124900 + 160452889 = 8070^2 + 12667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225577789 - 2¹ = 225577787 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225577783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23934 + ... + 31999.

It is an arithmetic number, because the mean of its divisors is an integer number (29225515).

Almost surely, 2^225577789 is an apocalyptic number.

It is an amenable number.

225577789 is a deficient number, since it is larger than the sum of its proper divisors (8226331).

225577789 is a wasteful number, since it uses less digits than its factorization.

225577789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56079.

The product of its digits is 2469600, while the sum is 52.

The square root of 225577789 is about 15019.2472847343. The cubic root of 225577789 is about 608.7403811232.

The spelling of 225577789 in words is "two hundred twenty-five million, five hundred seventy-seven thousand, seven hundred eighty-nine".