25493903 has 2 divisors, whose sum is σ = 25493904. Its totient is φ = 25493902.

The previous prime is 25493887. The next prime is 25493911. The reversal of 25493903 is 30939452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25493903 - 2⁴ = 25493887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25493933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12746951 + 12746952.

It is an arithmetic number, because the mean of its divisors is an integer number (12746952).

Almost surely, 2^25493903 is an apocalyptic number.

25493903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25493903 is an equidigital number, since it uses as much as digits as its factorization.

25493903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 25493903 is about 5049.1487401343. The cubic root of 25493903 is about 294.3148054069.

The spelling of 25493903 in words is "twenty-five million, four hundred ninety-three thousand, nine hundred three".