225474999 has 4 divisors (see below), whose sum is σ = 300633336. Its totient is φ = 150316664.

The previous prime is 225474989. The next prime is 225475007. The reversal of 225474999 is 999474522.

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 225474999 - 2⁵ = 225474967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225474979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37579164 + ... + 37579169.

It is an arithmetic number, because the mean of its divisors is an integer number (75158334).

Almost surely, 2^225474999 is an apocalyptic number.

225474999 is a deficient number, since it is larger than the sum of its proper divisors (75158337).

225474999 is an equidigital number, since it uses as much as digits as its factorization.

225474999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75158336.

The product of its digits is 1632960, while the sum is 51.

The square root of 225474999 is about 15015.8249523628. The cubic root of 225474999 is about 608.6479046274.

The spelling of 225474999 in words is "two hundred twenty-five million, four hundred seventy-four thousand, nine hundred ninety-nine".