225376891 has 4 divisors (see below), whose sum is σ = 230172192. Its totient is φ = 220581592.

The previous prime is 225376861. The next prime is 225376903. The reversal of 225376891 is 198673522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225376891 - 2²⁷ = 91159163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225376831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2397580 + ... + 2397673.

It is an arithmetic number, because the mean of its divisors is an integer number (57543048).

Almost surely, 2^225376891 is an apocalyptic number.

225376891 is a deficient number, since it is larger than the sum of its proper divisors (4795301).

225376891 is an equidigital number, since it uses as much as digits as its factorization.

225376891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4795300.

The product of its digits is 181440, while the sum is 43.

The square root of 225376891 is about 15012.5577767414. The cubic root of 225376891 is about 608.5596141418.

The spelling of 225376891 in words is "two hundred twenty-five million, three hundred seventy-six thousand, eight hundred ninety-one".