225471591 has 6 divisors (see below), whose sum is σ = 325681200. Its totient is φ = 150314388.

The previous prime is 225471581. The next prime is 225471601. The reversal of 225471591 is 195174522.

225471591 is a `hidden beast` number, since 2 + 25 + 47 + 1 + 591 = 666.

It is an interprime number because it is at equal distance from previous prime (225471581) and next prime (225471601).

It is a de Polignac number, because none of the positive numbers 2^k-225471591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225471511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12526191 + ... + 12526208.

It is an arithmetic number, because the mean of its divisors is an integer number (54280200).

Almost surely, 2^225471591 is an apocalyptic number.

225471591 is a deficient number, since it is larger than the sum of its proper divisors (100209609).

225471591 is a wasteful number, since it uses less digits than its factorization.

225471591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052405 (or 25052402 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 225471591 is about 15015.7114716553. The cubic root of 225471591 is about 608.6448380901.

The spelling of 225471591 in words is "two hundred twenty-five million, four hundred seventy-one thousand, five hundred ninety-one".