25693901 has 2 divisors, whose sum is σ = 25693902. Its totient is φ = 25693900.

The previous prime is 25693867. The next prime is 25693907. The reversal of 25693901 is 10939652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14638276 + 11055625 = 3826^2 + 3325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25693901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25693907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12846950 + 12846951.

It is an arithmetic number, because the mean of its divisors is an integer number (12846951).

Almost surely, 2^25693901 is an apocalyptic number.

It is an amenable number.

25693901 is a deficient number, since it is larger than the sum of its proper divisors (1).

25693901 is an equidigital number, since it uses as much as digits as its factorization.

25693901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 25693901 is about 5068.9151699353. The cubic root of 25693901 is about 295.0824283687.

The spelling of 25693901 in words is "twenty-five million, six hundred ninety-three thousand, nine hundred one".