224925209 has 2 divisors, whose sum is σ = 224925210. Its totient is φ = 224925208.

The previous prime is 224925199. The next prime is 224925223. The reversal of 224925209 is 902529422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116035984 + 108889225 = 10772^2 + 10435^2 .

It is a cyclic number.

It is not a de Polignac number, because 224925209 - 2²⁰ = 223876633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (224915209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112462604 + 112462605.

It is an arithmetic number, because the mean of its divisors is an integer number (112462605).

Almost surely, 2^224925209 is an apocalyptic number.

It is an amenable number.

224925209 is a deficient number, since it is larger than the sum of its proper divisors (1).

224925209 is an equidigital number, since it uses as much as digits as its factorization.

224925209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 224925209 is about 14997.5067594584. The cubic root of 224925209 is about 608.1528003897.

The spelling of 224925209 in words is "two hundred twenty-four million, nine hundred twenty-five thousand, two hundred nine".