225881613 has 12 divisors (see below), whose sum is σ = 326446848. Its totient is φ = 150507720.

The previous prime is 225881599. The next prime is 225881647. The reversal of 225881613 is 316188522.

It is a happy number.

It is not a de Polignac number, because 225881613 - 2⁵ = 225881581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225881683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14868 + ... + 25938.

It is an arithmetic number, because the mean of its divisors is an integer number (27203904).

Almost surely, 2^225881613 is an apocalyptic number.

It is an amenable number.

225881613 is a deficient number, since it is larger than the sum of its proper divisors (100565235).

225881613 is a wasteful number, since it uses less digits than its factorization.

225881613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344 (or 13341 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 225881613 is about 15029.3583695379. The cubic root of 225881613 is about 609.0135566073.

The spelling of 225881613 in words is "two hundred twenty-five million, eight hundred eighty-one thousand, six hundred thirteen".