25236404863 has 2 divisors, whose sum is σ = 25236404864. Its totient is φ = 25236404862.

The previous prime is 25236404833. The next prime is 25236404909. The reversal of 25236404863 is 36840463252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25236404863 is a prime.

It is a super-2 number, since 2×25236404863² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25236404813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12618202431 + 12618202432.

It is an arithmetic number, because the mean of its divisors is an integer number (12618202432).

Almost surely, 2^25236404863 is an apocalyptic number.

25236404863 is a deficient number, since it is larger than the sum of its proper divisors (1).

25236404863 is an equidigital number, since it uses as much as digits as its factorization.

25236404863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 25236404863 in words is "twenty-five billion, two hundred thirty-six million, four hundred four thousand, eight hundred sixty-three".