25985693 has 2 divisors, whose sum is σ = 25985694. Its totient is φ = 25985692.

The previous prime is 25985681. The next prime is 25985747. The reversal of 25985693 is 39658952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25775929 + 209764 = 5077^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 25985693 - 2¹⁶ = 25920157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25987693) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12992846 + 12992847.

It is an arithmetic number, because the mean of its divisors is an integer number (12992847).

Almost surely, 2^25985693 is an apocalyptic number.

It is an amenable number.

25985693 is a deficient number, since it is larger than the sum of its proper divisors (1).

25985693 is an equidigital number, since it uses as much as digits as its factorization.

25985693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The square root of 25985693 is about 5097.6164037715. The cubic root of 25985693 is about 296.1952578562.

The spelling of 25985693 in words is "twenty-five million, nine hundred eighty-five thousand, six hundred ninety-three".