25740263 has 2 divisors, whose sum is σ = 25740264. Its totient is φ = 25740262.

The previous prime is 25740257. The next prime is 25740293. The reversal of 25740263 is 36204752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25740263 - 2⁸ = 25740007 is a prime.

It is a super-2 number, since 2×25740263² = 1325122278618338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25740203) 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, 12870131 + 12870132.

It is an arithmetic number, because the mean of its divisors is an integer number (12870132).

Almost surely, 2^25740263 is an apocalyptic number.

25740263 is a deficient number, since it is larger than the sum of its proper divisors (1).

25740263 is an equidigital number, since it uses as much as digits as its factorization.

25740263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 25740263 is about 5073.4862767135. The cubic root of 25740263 is about 295.2598036839.

The spelling of 25740263 in words is "twenty-five million, seven hundred forty thousand, two hundred sixty-three".