25608780871 has 2 divisors, whose sum is σ = 25608780872. Its totient is φ = 25608780870.

The previous prime is 25608780863. The next prime is 25608781043. The reversal of 25608780871 is 17808780652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25608780871 - 2³ = 25608780863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25608730871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12804390435 + 12804390436.

It is an arithmetic number, because the mean of its divisors is an integer number (12804390436).

Almost surely, 2^25608780871 is an apocalyptic number.

25608780871 is a deficient number, since it is larger than the sum of its proper divisors (1).

25608780871 is an equidigital number, since it uses as much as digits as its factorization.

25608780871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 25608780871 in words is "twenty-five billion, six hundred eight million, seven hundred eighty thousand, eight hundred seventy-one".