25851593 has 2 divisors, whose sum is σ = 25851594. Its totient is φ = 25851592.

The previous prime is 25851587. The next prime is 25851599. The reversal of 25851593 is 39515852.

It is a balanced prime because it is at equal distance from previous prime (25851587) and next prime (25851599).

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 11916304 = 3733^2 + 3452^2 .

It is a cyclic number.

It is not a de Polignac number, because 25851593 - 2¹⁰ = 25850569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25851599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925796 + 12925797.

It is an arithmetic number, because the mean of its divisors is an integer number (12925797).

Almost surely, 2^25851593 is an apocalyptic number.

It is an amenable number.

25851593 is a deficient number, since it is larger than the sum of its proper divisors (1).

25851593 is an equidigital number, since it uses as much as digits as its factorization.

25851593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The square root of 25851593 is about 5084.4461841974. The cubic root of 25851593 is about 295.6848705223.

The spelling of 25851593 in words is "twenty-five million, eight hundred fifty-one thousand, five hundred ninety-three".