225829645 has 4 divisors (see below), whose sum is σ = 270995580. Its totient is φ = 180663712.

The previous prime is 225829621. The next prime is 225829651. The reversal of 225829645 is 546928522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 110439081 + 115390564 = 10509^2 + 10742^2 .

It is a cyclic number.

It is not a de Polignac number, because 225829645 - 2⁵ = 225829613 is a prime.

It is a super-3 number, since 3×225829645³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22582960 + ... + 22582969.

It is an arithmetic number, because the mean of its divisors is an integer number (67748895).

Almost surely, 2^225829645 is an apocalyptic number.

It is an amenable number.

225829645 is a deficient number, since it is larger than the sum of its proper divisors (45165935).

225829645 is an equidigital number, since it uses as much as digits as its factorization.

225829645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45165934.

The product of its digits is 345600, while the sum is 43.

The square root of 225829645 is about 15027.6293872320. The cubic root of 225829645 is about 608.9668482991.

The spelling of 225829645 in words is "two hundred twenty-five million, eight hundred twenty-nine thousand, six hundred forty-five".