225584643 has 4 divisors (see below), whose sum is σ = 300779528. Its totient is φ = 150389760.

The previous prime is 225584633. The next prime is 225584669. The reversal of 225584643 is 346485522.

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

It is not a de Polignac number, because 225584643 - 2⁴ = 225584627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225584633) 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, 37597438 + ... + 37597443.

It is an arithmetic number, because the mean of its divisors is an integer number (75194882).

Almost surely, 2^225584643 is an apocalyptic number.

225584643 is a deficient number, since it is larger than the sum of its proper divisors (75194885).

225584643 is an equidigital number, since it uses as much as digits as its factorization.

225584643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75194884.

The product of its digits is 230400, while the sum is 39.

The square root of 225584643 is about 15019.4754568860. The cubic root of 225584643 is about 608.7465464234.

The spelling of 225584643 in words is "two hundred twenty-five million, five hundred eighty-four thousand, six hundred forty-three".