225140609 has 2 divisors, whose sum is σ = 225140610. Its totient is φ = 225140608.

The previous prime is 225140603. The next prime is 225140621. The reversal of 225140609 is 906041522.

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., 166281025 + 58859584 = 12895^2 + 7672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225140609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225140603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112570304 + 112570305.

It is an arithmetic number, because the mean of its divisors is an integer number (112570305).

Almost surely, 2^225140609 is an apocalyptic number.

It is an amenable number.

225140609 is a deficient number, since it is larger than the sum of its proper divisors (1).

225140609 is an equidigital number, since it uses as much as digits as its factorization.

225140609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 225140609 is about 15004.6862346402. The cubic root of 225140609 is about 608.3468712986.

The spelling of 225140609 in words is "two hundred twenty-five million, one hundred forty thousand, six hundred nine".