25404563 has 2 divisors, whose sum is σ = 25404564. Its totient is φ = 25404562.

The previous prime is 25404527. The next prime is 25404571. The reversal of 25404563 is 36540452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25404563 - 2⁶ = 25404499 is a prime.

It is not a weakly prime, because it can be changed into another prime (25404503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702281 + 12702282.

It is an arithmetic number, because the mean of its divisors is an integer number (12702282).

Almost surely, 2^25404563 is an apocalyptic number.

25404563 is a deficient number, since it is larger than the sum of its proper divisors (1).

25404563 is an equidigital number, since it uses as much as digits as its factorization.

25404563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 25404563 is about 5040.2939398412. The cubic root of 25404563 is about 293.9706073011.

The spelling of 25404563 in words is "twenty-five million, four hundred four thousand, five hundred sixty-three".