25849903 has 2 divisors, whose sum is σ = 25849904. Its totient is φ = 25849902.

The previous prime is 25849897. The next prime is 25849913. The reversal of 25849903 is 30994852.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25849903 - 2⁵ = 25849871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25849913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12924951 + 12924952.

It is an arithmetic number, because the mean of its divisors is an integer number (12924952).

Almost surely, 2^25849903 is an apocalyptic number.

25849903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25849903 is an equidigital number, since it uses as much as digits as its factorization.

25849903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 25849903 is about 5084.2799883563. The cubic root of 25849903 is about 295.6784270983.

The spelling of 25849903 in words is "twenty-five million, eight hundred forty-nine thousand, nine hundred three".