225840007 has 2 divisors, whose sum is σ = 225840008. Its totient is φ = 225840006.

The previous prime is 225839989. The next prime is 225840031. The reversal of 225840007 is 700048522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225840007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225840047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112920003 + 112920004.

It is an arithmetic number, because the mean of its divisors is an integer number (112920004).

Almost surely, 2^225840007 is an apocalyptic number.

225840007 is a deficient number, since it is larger than the sum of its proper divisors (1).

225840007 is an equidigital number, since it uses as much as digits as its factorization.

225840007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 225840007 is about 15027.9741482344. The cubic root of 225840007 is about 608.9761621309.

Adding to 225840007 its reverse (700048522), we get a palindrome (925888529).

The spelling of 225840007 in words is "two hundred twenty-five million, eight hundred forty thousand, seven".