225640353 has 16 divisors (see below), whose sum is σ = 306302720. Its totient is φ = 147723264.

The previous prime is 225640309. The next prime is 225640369. The reversal of 225640353 is 353046522.

It is not a de Polignac number, because 225640353 - 2¹⁰ = 225639329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225640353.

It is not an unprimeable number, because it can be changed into a prime (225640253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43275 + ... + 48207.

It is an arithmetic number, because the mean of its divisors is an integer number (19143920).

Almost surely, 2^225640353 is an apocalyptic number.

It is an amenable number.

225640353 is a deficient number, since it is larger than the sum of its proper divisors (80662367).

225640353 is a wasteful number, since it uses less digits than its factorization.

225640353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 225640353 is about 15021.3299344632. The cubic root of 225640353 is about 608.7966539696.

Adding to 225640353 its reverse (353046522), we get a palindrome (578686875).

The spelling of 225640353 in words is "two hundred twenty-five million, six hundred forty thousand, three hundred fifty-three".