225307739 has 2 divisors, whose sum is σ = 225307740. Its totient is φ = 225307738.

The previous prime is 225307697. The next prime is 225307777. The reversal of 225307739 is 937703522.

It is a happy number.

It is an a-pointer prime, because the next prime (225307777) can be obtained adding 225307739 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225307739 - 2⁸ = 225307483 is a prime.

It is equal to p_12398807 and since 225307739 and 12398807 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (225307139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112653869 + 112653870.

It is an arithmetic number, because the mean of its divisors is an integer number (112653870).

Almost surely, 2^225307739 is an apocalyptic number.

225307739 is a deficient number, since it is larger than the sum of its proper divisors (1).

225307739 is an equidigital number, since it uses as much as digits as its factorization.

225307739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 225307739 is about 15010.2544615340. The cubic root of 225307739 is about 608.4973666785.

The spelling of 225307739 in words is "two hundred twenty-five million, three hundred seven thousand, seven hundred thirty-nine".