225079809 has 8 divisors (see below), whose sum is σ = 309787392. Its totient is φ = 145212720.

The previous prime is 225079793. The next prime is 225079853. The reversal of 225079809 is 908970522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225079809 - 2⁴ = 225079793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225079879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210014 + ... + 1210199.

It is an arithmetic number, because the mean of its divisors is an integer number (38723424).

Almost surely, 2^225079809 is an apocalyptic number.

It is an amenable number.

225079809 is a deficient number, since it is larger than the sum of its proper divisors (84707583).

225079809 is a wasteful number, since it uses less digits than its factorization.

225079809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420247.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 225079809 is about 15002.6600641353. The cubic root of 225079809 is about 608.2921043095.

The spelling of 225079809 in words is "two hundred twenty-five million, seventy-nine thousand, eight hundred nine".