225457645 has 8 divisors (see below), whose sum is σ = 309199104. Its totient is φ = 154599504.

The previous prime is 225457607. The next prime is 225457657. The reversal of 225457645 is 546754522.

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 225457645 - 2⁷ = 225457517 is a prime.

It is a super-3 number, since 3×225457645³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225457598 and 225457607.

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, 3220789 + ... + 3220858.

It is an arithmetic number, because the mean of its divisors is an integer number (38649888).

Almost surely, 2^225457645 is an apocalyptic number.

It is an amenable number.

225457645 is a deficient number, since it is larger than the sum of its proper divisors (83741459).

225457645 is an equidigital number, since it uses as much as digits as its factorization.

225457645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441659.

The product of its digits is 336000, while the sum is 40.

The square root of 225457645 is about 15015.2470842141. The cubic root of 225457645 is about 608.6322890798.

The spelling of 225457645 in words is "two hundred twenty-five million, four hundred fifty-seven thousand, six hundred forty-five".