257925103 has 2 divisors, whose sum is σ = 257925104. Its totient is φ = 257925102.

The previous prime is 257925097. The next prime is 257925121. The reversal of 257925103 is 301529752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257925103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257925193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128962551 + 128962552.

It is an arithmetic number, because the mean of its divisors is an integer number (128962552).

Almost surely, 2^257925103 is an apocalyptic number.

257925103 is a deficient number, since it is larger than the sum of its proper divisors (1).

257925103 is an equidigital number, since it uses as much as digits as its factorization.

257925103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 257925103 is about 16060.0467932070. The cubic root of 257925103 is about 636.5480678124.

The spelling of 257925103 in words is "two hundred fifty-seven million, nine hundred twenty-five thousand, one hundred three".