225792091 has 4 divisors (see below), whose sum is σ = 258048112. Its totient is φ = 193536072.

The previous prime is 225792071. The next prime is 225792169. The reversal of 225792091 is 190297522.

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 225792091 - 2⁷ = 225791963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225792091.

It is not an unprimeable number, because it can be changed into a prime (225792071) 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, 16128000 + ... + 16128013.

It is an arithmetic number, because the mean of its divisors is an integer number (64512028).

Almost surely, 2^225792091 is an apocalyptic number.

225792091 is a deficient number, since it is larger than the sum of its proper divisors (32256021).

225792091 is an equidigital number, since it uses as much as digits as its factorization.

225792091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32256020.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 225792091 is about 15026.3798368070. The cubic root of 225792091 is about 608.9330906868.

The spelling of 225792091 in words is "two hundred twenty-five million, seven hundred ninety-two thousand, ninety-one".