225404365 has 4 divisors (see below), whose sum is σ = 270485244. Its totient is φ = 180323488.

The previous prime is 225404357. The next prime is 225404383. The reversal of 225404365 is 563404522.

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 175589001 + 49815364 = 13251^2 + 7058^2 .

It is a cyclic number.

It is not a de Polignac number, because 225404365 - 2³ = 225404357 is a prime.

It is a super-2 number, since 2×225404365² = 101614255522106450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 22540432 + ... + 22540441.

It is an arithmetic number, because the mean of its divisors is an integer number (67621311).

Almost surely, 2^225404365 is an apocalyptic number.

It is an amenable number.

225404365 is a deficient number, since it is larger than the sum of its proper divisors (45080879).

225404365 is an equidigital number, since it uses as much as digits as its factorization.

225404365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45080878.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 225404365 is about 15013.4727828041. The cubic root of 225404365 is about 608.5843414440.

Adding to 225404365 its reverse (563404522), we get a palindrome (788808887).

The spelling of 225404365 in words is "two hundred twenty-five million, four hundred four thousand, three hundred sixty-five".