225992791 has 4 divisors (see below), whose sum is σ = 227489584. Its totient is φ = 224496000.

The previous prime is 225992749. The next prime is 225992797. The reversal of 225992791 is 197299522.

225992791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225992791 - 2⁹ = 225992279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225992797) 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, 748170 + ... + 748471.

It is an arithmetic number, because the mean of its divisors is an integer number (56872396).

Almost surely, 2^225992791 is an apocalyptic number.

225992791 is a deficient number, since it is larger than the sum of its proper divisors (1496793).

225992791 is a wasteful number, since it uses less digits than its factorization.

225992791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496792.

The product of its digits is 204120, while the sum is 46.

The square root of 225992791 is about 15033.0566086874. The cubic root of 225992791 is about 609.1134582072.

The spelling of 225992791 in words is "two hundred twenty-five million, nine hundred ninety-two thousand, seven hundred ninety-one".