225399265 has 24 divisors (see below), whose sum is σ = 338846760. Its totient is φ = 142668288.

The previous prime is 225399221. The next prime is 225399269. The reversal of 225399265 is 562993522.

It can be written as a sum of positive squares in 4 ways, for example, as 29203216 + 196196049 = 5404^2 + 14007^2 .

It is not a de Polignac number, because 225399265 - 2⁷ = 225399137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225399269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32200 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (14118615).

Almost surely, 2^225399265 is an apocalyptic number.

It is an amenable number.

225399265 is a deficient number, since it is larger than the sum of its proper divisors (113447495).

225399265 is a wasteful number, since it uses less digits than its factorization.

225399265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70801 (or 70794 counting only the distinct ones).

The product of its digits is 291600, while the sum is 43.

The square root of 225399265 is about 15013.3029343979. The cubic root of 225399265 is about 608.5797514656.

The spelling of 225399265 in words is "two hundred twenty-five million, three hundred ninety-nine thousand, two hundred sixty-five".