25388263 has 2 divisors, whose sum is σ = 25388264. Its totient is φ = 25388262.

The previous prime is 25388249. The next prime is 25388281. The reversal of 25388263 is 36288352.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25388263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25388203) 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, 12694131 + 12694132.

It is an arithmetic number, because the mean of its divisors is an integer number (12694132).

Almost surely, 2^25388263 is an apocalyptic number.

25388263 is a deficient number, since it is larger than the sum of its proper divisors (1).

25388263 is an equidigital number, since it uses as much as digits as its factorization.

25388263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 25388263 is about 5038.6767112011. The cubic root of 25388263 is about 293.9077216681.

It can be divided in two parts, 25388 and 263, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25388263 in words is "twenty-five million, three hundred eighty-eight thousand, two hundred sixty-three".