203425109 has 2 divisors, whose sum is σ = 203425110. Its totient is φ = 203425108.

The previous prime is 203425093. The next prime is 203425127. The reversal of 203425109 is 901524302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149989009 + 53436100 = 12247^2 + 7310^2 .

It is a cyclic number.

It is not a de Polignac number, because 203425109 - 2⁴ = 203425093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203425129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101712554 + 101712555.

It is an arithmetic number, because the mean of its divisors is an integer number (101712555).

Almost surely, 2^203425109 is an apocalyptic number.

It is an amenable number.

203425109 is a deficient number, since it is larger than the sum of its proper divisors (1).

203425109 is an equidigital number, since it uses as much as digits as its factorization.

203425109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 203425109 is about 14262.7174479480. The cubic root of 203425109 is about 588.1230296575.

The spelling of 203425109 in words is "two hundred three million, four hundred twenty-five thousand, one hundred nine".