25563079 has 2 divisors, whose sum is σ = 25563080. Its totient is φ = 25563078.

The previous prime is 25563077. The next prime is 25563137. The reversal of 25563079 is 97036552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25563079 - 2¹ = 25563077 is a prime.

Together with 25563077, it forms a pair of twin primes.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25563071) 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, 12781539 + 12781540.

It is an arithmetic number, because the mean of its divisors is an integer number (12781540).

Almost surely, 2^25563079 is an apocalyptic number.

25563079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25563079 is an equidigital number, since it uses as much as digits as its factorization.

25563079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 25563079 is about 5055.9943631298. The cubic root of 25563079 is about 294.5807661735.

The spelling of 25563079 in words is "twenty-five million, five hundred sixty-three thousand, seventy-nine".