25571089853 has 2 divisors, whose sum is σ = 25571089854. Its totient is φ = 25571089852.

The previous prime is 25571089847. The next prime is 25571089889. The reversal of 25571089853 is 35898017552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15349475449 + 10221614404 = 123893^2 + 101102^2 .

It is a cyclic number.

It is not a de Polignac number, because 25571089853 - 2⁴ = 25571089837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25571089795 and 25571089804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25571089153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12785544926 + 12785544927.

It is an arithmetic number, because the mean of its divisors is an integer number (12785544927).

Almost surely, 2^25571089853 is an apocalyptic number.

It is an amenable number.

25571089853 is a deficient number, since it is larger than the sum of its proper divisors (1).

25571089853 is an equidigital number, since it uses as much as digits as its factorization.

25571089853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 25571089853 in words is "twenty-five billion, five hundred seventy-one million, eighty-nine thousand, eight hundred fifty-three".