129725203 has 2 divisors, whose sum is σ = 129725204. Its totient is φ = 129725202.

The previous prime is 129725177. The next prime is 129725213. The reversal of 129725203 is 302527921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129725203 - 2⁵ = 129725171 is a prime.

It is not a weakly prime, because it can be changed into another prime (129725213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64862601 + 64862602.

It is an arithmetic number, because the mean of its divisors is an integer number (64862602).

Almost surely, 2^129725203 is an apocalyptic number.

129725203 is a deficient number, since it is larger than the sum of its proper divisors (1).

129725203 is an equidigital number, since it uses as much as digits as its factorization.

129725203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 129725203 is about 11389.6972303920. The cubic root of 129725203 is about 506.2225101570. Note that the first 3 decimals are identical.

The spelling of 129725203 in words is "one hundred twenty-nine million, seven hundred twenty-five thousand, two hundred three".