225277209 has 12 divisors (see below), whose sum is σ = 330735652. Its totient is φ = 147722400.

The previous prime is 225277193. The next prime is 225277211. The reversal of 225277209 is 902772522.

It can be written as a sum of positive squares in 2 ways, for example, as 23068809 + 202208400 = 4803^2 + 14220^2 .

It is not a de Polignac number, because 225277209 - 2⁴ = 225277193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225277229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204622 + ... + 205719.

Almost surely, 2^225277209 is an apocalyptic number.

It is an amenable number.

225277209 is a deficient number, since it is larger than the sum of its proper divisors (105458443).

225277209 is a wasteful number, since it uses less digits than its factorization.

225277209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410408 (or 410405 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 225277209 is about 15009.2374556471. The cubic root of 225277209 is about 608.4698809178.

The spelling of 225277209 in words is "two hundred twenty-five million, two hundred seventy-seven thousand, two hundred nine".