225384591 has 16 divisors (see below), whose sum is σ = 306399744. Its totient is φ = 147340224.

The previous prime is 225384587. The next prime is 225384617. The reversal of 225384591 is 195483522.

It is not a de Polignac number, because 225384591 - 2² = 225384587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225384541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30810 + ... + 37416.

It is an arithmetic number, because the mean of its divisors is an integer number (19149984).

Almost surely, 2^225384591 is an apocalyptic number.

225384591 is a deficient number, since it is larger than the sum of its proper divisors (81015153).

225384591 is a wasteful number, since it uses less digits than its factorization.

225384591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830.

The product of its digits is 86400, while the sum is 39.

The square root of 225384591 is about 15012.8142265200. The cubic root of 225384591 is about 608.5665445413.

The spelling of 225384591 in words is "two hundred twenty-five million, three hundred eighty-four thousand, five hundred ninety-one".