225585613 has 8 divisors (see below), whose sum is σ = 259045920. Its totient is φ = 194284080.

The previous prime is 225585593. The next prime is 225585623. The reversal of 225585613 is 316585522.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225585613 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 (225585623) 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, 539470 + ... + 539887.

It is an arithmetic number, because the mean of its divisors is an integer number (32380740).

Almost surely, 2^225585613 is an apocalyptic number.

It is an amenable number.

225585613 is a deficient number, since it is larger than the sum of its proper divisors (33460307).

225585613 is a wasteful number, since it uses less digits than its factorization.

225585613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079387.

The product of its digits is 72000, while the sum is 37.

The square root of 225585613 is about 15019.5077482586. The cubic root of 225585613 is about 608.7474189463.

Subtracting 225585613 from its reverse (316585522), we obtain a palindrome (90999909).

The spelling of 225585613 in words is "two hundred twenty-five million, five hundred eighty-five thousand, six hundred thirteen".