25840253 has 2 divisors, whose sum is σ = 25840254. Its totient is φ = 25840252.

The previous prime is 25840249. The next prime is 25840273. The reversal of 25840253 is 35204852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 3364 = 5083^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 25840253 - 2² = 25840249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25840223) 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, 12920126 + 12920127.

It is an arithmetic number, because the mean of its divisors is an integer number (12920127).

Almost surely, 2^25840253 is an apocalyptic number.

It is an amenable number.

25840253 is a deficient number, since it is larger than the sum of its proper divisors (1).

25840253 is an equidigital number, since it uses as much as digits as its factorization.

25840253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 25840253 is about 5083.3308961743. The cubic root of 25840253 is about 295.6416293852.

The spelling of 25840253 in words is "twenty-five million, eight hundred forty thousand, two hundred fifty-three".