225895491 has 6 divisors (see below), whose sum is σ = 326293500. Its totient is φ = 150596988.

The previous prime is 225895463. The next prime is 225895493. The reversal of 225895491 is 194598522.

It is a happy number.

225895491 is a `hidden beast` number, since 2 + 25 + 89 + 549 + 1 = 666.

It is not a de Polignac number, because 225895491 - 2⁵ = 225895459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225895493) 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, 12549741 + ... + 12549758.

It is an arithmetic number, because the mean of its divisors is an integer number (54382250).

Almost surely, 2^225895491 is an apocalyptic number.

225895491 is a deficient number, since it is larger than the sum of its proper divisors (100398009).

225895491 is a wasteful number, since it uses less digits than its factorization.

225895491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25099505 (or 25099502 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 225895491 is about 15029.8200588031. The cubic root of 225895491 is about 609.0260288001.

The spelling of 225895491 in words is "two hundred twenty-five million, eight hundred ninety-five thousand, four hundred ninety-one".