25580663 has 2 divisors, whose sum is σ = 25580664. Its totient is φ = 25580662.

The previous prime is 25580641. The next prime is 25580693. The reversal of 25580663 is 36608552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25580663 - 2¹⁰ = 25579639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25580603) 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, 12790331 + 12790332.

It is an arithmetic number, because the mean of its divisors is an integer number (12790332).

Almost surely, 2^25580663 is an apocalyptic number.

25580663 is a deficient number, since it is larger than the sum of its proper divisors (1).

25580663 is an equidigital number, since it uses as much as digits as its factorization.

25580663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 25580663 is about 5057.7329901844. The cubic root of 25580663 is about 294.6482948275.

The spelling of 25580663 in words is "twenty-five million, five hundred eighty thousand, six hundred sixty-three".