25456085647 has 2 divisors, whose sum is σ = 25456085648. Its totient is φ = 25456085646.

The previous prime is 25456085623. The next prime is 25456085723. The reversal of 25456085647 is 74658065452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25456085647 - 2¹¹ = 25456083599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25456085594 and 25456085603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25456085047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728042823 + 12728042824.

It is an arithmetic number, because the mean of its divisors is an integer number (12728042824).

Almost surely, 2^25456085647 is an apocalyptic number.

25456085647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25456085647 is an equidigital number, since it uses as much as digits as its factorization.

25456085647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 25456085647 in words is "twenty-five billion, four hundred fifty-six million, eighty-five thousand, six hundred forty-seven".