225591589 has 4 divisors (see below), whose sum is σ = 225625356. Its totient is φ = 225557824.

The previous prime is 225591571. The next prime is 225591599. The reversal of 225591589 is 985195522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12723489 + 212868100 = 3567^2 + 14590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225591589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225591559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3124 + ... + 21469.

It is an arithmetic number, because the mean of its divisors is an integer number (56406339).

Almost surely, 2^225591589 is an apocalyptic number.

It is an amenable number.

225591589 is a deficient number, since it is larger than the sum of its proper divisors (33767).

225591589 is an equidigital number, since it uses as much as digits as its factorization.

225591589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33766.

The product of its digits is 324000, while the sum is 46.

The square root of 225591589 is about 15019.7066882147. The cubic root of 225591589 is about 608.7527943518.

It can be divided in two parts, 2255915 and 89, that added together give a square (2256004 = 1502²).

The spelling of 225591589 in words is "two hundred twenty-five million, five hundred ninety-one thousand, five hundred eighty-nine".