225257863 has 6 divisors (see below), whose sum is σ = 237737904. Its totient is φ = 213401844.

The previous prime is 225257861. The next prime is 225257867. The reversal of 225257863 is 368752522.

It is not a de Polignac number, because 225257863 - 2¹ = 225257861 is a prime.

It is a super-2 number, since 2×225257863² = 101482209686653538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225257861) 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, 311631 + ... + 312352.

It is an arithmetic number, because the mean of its divisors is an integer number (39622984).

Almost surely, 2^225257863 is an apocalyptic number.

225257863 is a deficient number, since it is larger than the sum of its proper divisors (12480041).

225257863 is an equidigital number, since it uses as much as digits as its factorization.

225257863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624021 (or 624002 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 225257863 is about 15008.5929720277. The cubic root of 225257863 is about 608.4524626810.

The spelling of 225257863 in words is "two hundred twenty-five million, two hundred fifty-seven thousand, eight hundred sixty-three".