25728458851 has 2 divisors, whose sum is σ = 25728458852. Its totient is φ = 25728458850.

The previous prime is 25728458831. The next prime is 25728458891. The reversal of 25728458851 is 15885482752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25728458851 - 2²¹ = 25726361699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25728458792 and 25728458801.

It is not a weakly prime, because it can be changed into another prime (25728458831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12864229425 + 12864229426.

It is an arithmetic number, because the mean of its divisors is an integer number (12864229426).

Almost surely, 2^25728458851 is an apocalyptic number.

25728458851 is a deficient number, since it is larger than the sum of its proper divisors (1).

25728458851 is an equidigital number, since it uses as much as digits as its factorization.

25728458851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168000, while the sum is 55.

The spelling of 25728458851 in words is "twenty-five billion, seven hundred twenty-eight million, four hundred fifty-eight thousand, eight hundred fifty-one".