203425129 has 2 divisors, whose sum is σ = 203425130. Its totient is φ = 203425128.

The previous prime is 203425127. The next prime is 203425147. The reversal of 203425129 is 921524302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186186025 + 17239104 = 13645^2 + 4152^2 .

It is a cyclic number.

It is not a de Polignac number, because 203425129 - 2¹ = 203425127 is a prime.

Together with 203425127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 203425097 and 203425106.

It is not a weakly prime, because it can be changed into another prime (203425127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101712564 + 101712565.

It is an arithmetic number, because the mean of its divisors is an integer number (101712565).

Almost surely, 2^203425129 is an apocalyptic number.

It is an amenable number.

203425129 is a deficient number, since it is larger than the sum of its proper divisors (1).

203425129 is an equidigital number, since it uses as much as digits as its factorization.

203425129 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 203425129 is about 14262.7181490766. The cubic root of 203425129 is about 588.1230489315.

The spelling of 203425129 in words is "two hundred three million, four hundred twenty-five thousand, one hundred twenty-nine".