201225439 has 2 divisors, whose sum is σ = 201225440. Its totient is φ = 201225438.

The previous prime is 201225391. The next prime is 201225457. The reversal of 201225439 is 934522102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201225439 - 2⁹ = 201224927 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 (201223439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100612719 + 100612720.

It is an arithmetic number, because the mean of its divisors is an integer number (100612720).

Almost surely, 2^201225439 is an apocalyptic number.

201225439 is a deficient number, since it is larger than the sum of its proper divisors (1).

201225439 is an equidigital number, since it uses as much as digits as its factorization.

201225439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 201225439 is about 14185.3952711935. The cubic root of 201225439 is about 585.9955182595.

The spelling of 201225439 in words is "two hundred one million, two hundred twenty-five thousand, four hundred thirty-nine".