225134145209 has 2 divisors, whose sum is σ = 225134145210. Its totient is φ = 225134145208.

The previous prime is 225134145143. The next prime is 225134145239. The reversal of 225134145209 is 902541431522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179731058809 + 45403086400 = 423947^2 + 213080^2 .

It is a cyclic number.

It is not a de Polignac number, because 225134145209 - 2¹⁶ = 225134079673 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 (225134145239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112567072604 + 112567072605.

It is an arithmetic number, because the mean of its divisors is an integer number (112567072605).

Almost surely, 2^225134145209 is an apocalyptic number.

It is an amenable number.

225134145209 is a deficient number, since it is larger than the sum of its proper divisors (1).

225134145209 is an equidigital number, since it uses as much as digits as its factorization.

225134145209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 225134145209 in words is "two hundred twenty-five billion, one hundred thirty-four million, one hundred forty-five thousand, two hundred nine".