25778353 has 2 divisors, whose sum is σ = 25778354. Its totient is φ = 25778352.

The previous prime is 25778323. The next prime is 25778369. The reversal of 25778353 is 35387752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 5094049 = 4548^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 25778353 - 2⁵ = 25778321 is a prime.

It is not a weakly prime, because it can be changed into another prime (25778323) 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, 12889176 + 12889177.

It is an arithmetic number, because the mean of its divisors is an integer number (12889177).

Almost surely, 2^25778353 is an apocalyptic number.

It is an amenable number.

25778353 is a deficient number, since it is larger than the sum of its proper divisors (1).

25778353 is an equidigital number, since it uses as much as digits as its factorization.

25778353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 25778353 is about 5077.2387180435. The cubic root of 25778353 is about 295.4053720366.

The spelling of 25778353 in words is "twenty-five million, seven hundred seventy-eight thousand, three hundred fifty-three".