25782349 has 2 divisors, whose sum is σ = 25782350. Its totient is φ = 25782348.

The previous prime is 25782343. The next prime is 25782389. The reversal of 25782349 is 94328752.

It is an a-pointer prime, because the next prime (25782389) can be obtained adding 25782349 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21921124 + 3861225 = 4682^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 25782349 - 2⁹ = 25781837 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25782343) 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, 12891174 + 12891175.

It is an arithmetic number, because the mean of its divisors is an integer number (12891175).

Almost surely, 2^25782349 is an apocalyptic number.

It is an amenable number.

25782349 is a deficient number, since it is larger than the sum of its proper divisors (1).

25782349 is an equidigital number, since it uses as much as digits as its factorization.

25782349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 25782349 is about 5077.6322237830. The cubic root of 25782349 is about 295.4206352159.

The spelling of 25782349 in words is "twenty-five million, seven hundred eighty-two thousand, three hundred forty-nine".