225791923 has 4 divisors (see below), whose sum is σ = 258047920. Its totient is φ = 193535928.

The previous prime is 225791911. The next prime is 225791933. The reversal of 225791923 is 329197522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225791923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225791933) 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, 16127988 + ... + 16128001.

It is an arithmetic number, because the mean of its divisors is an integer number (64511980).

Almost surely, 2^225791923 is an apocalyptic number.

225791923 is a deficient number, since it is larger than the sum of its proper divisors (32255997).

225791923 is an equidigital number, since it uses as much as digits as its factorization.

225791923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32255996.

The product of its digits is 68040, while the sum is 40.

The square root of 225791923 is about 15026.3742466371. The cubic root of 225791923 is about 608.9329396618.

The spelling of 225791923 in words is "two hundred twenty-five million, seven hundred ninety-one thousand, nine hundred twenty-three".