225814645 has 8 divisors (see below), whose sum is σ = 309688704. Its totient is φ = 154844304.

The previous prime is 225814637. The next prime is 225814669. The reversal of 225814645 is 546418522.

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

It is a cyclic number.

It is not a de Polignac number, because 225814645 - 2³ = 225814637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3225889 + ... + 3225958.

It is an arithmetic number, because the mean of its divisors is an integer number (38711088).

Almost surely, 2^225814645 is an apocalyptic number.

It is an amenable number.

225814645 is a deficient number, since it is larger than the sum of its proper divisors (83874059).

225814645 is an equidigital number, since it uses as much as digits as its factorization.

225814645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6451859.

The product of its digits is 76800, while the sum is 37.

The square root of 225814645 is about 15027.1302982306. The cubic root of 225814645 is about 608.9533651196.

The spelling of 225814645 in words is "two hundred twenty-five million, eight hundred fourteen thousand, six hundred forty-five".