225274009 has 4 divisors (see below), whose sum is σ = 229524516. Its totient is φ = 221023504.

The previous prime is 225274003. The next prime is 225274043. The reversal of 225274009 is 900472522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900472522 = 2 ⋅450236261.

It can be written as a sum of positive squares in 2 ways, for example, as 92102409 + 133171600 = 9597^2 + 11540^2 .

It is a cyclic number.

It is not a de Polignac number, because 225274009 - 2¹⁵ = 225241241 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225274003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125174 + ... + 2125279.

It is an arithmetic number, because the mean of its divisors is an integer number (57381129).

Almost surely, 2^225274009 is an apocalyptic number.

It is an amenable number.

225274009 is a deficient number, since it is larger than the sum of its proper divisors (4250507).

225274009 is an equidigital number, since it uses as much as digits as its factorization.

225274009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250506.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 225274009 is about 15009.1308542500. The cubic root of 225274009 is about 608.4669998558.

The spelling of 225274009 in words is "two hundred twenty-five million, two hundred seventy-four thousand, nine".