25857103 has 2 divisors, whose sum is σ = 25857104. Its totient is φ = 25857102.

The previous prime is 25857079. The next prime is 25857133. The reversal of 25857103 is 30175852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25857103 - 2¹⁷ = 25726031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25857133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12928551 + 12928552.

It is an arithmetic number, because the mean of its divisors is an integer number (12928552).

Almost surely, 2^25857103 is an apocalyptic number.

25857103 is a deficient number, since it is larger than the sum of its proper divisors (1).

25857103 is an equidigital number, since it uses as much as digits as its factorization.

25857103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 25857103 is about 5084.9880039190. The cubic root of 25857103 is about 295.7058764219.

The spelling of 25857103 in words is "twenty-five million, eight hundred fifty-seven thousand, one hundred three".