25608935957 has 4 divisors (see below), whose sum is σ = 27937021056. Its totient is φ = 23280850860.

The previous prime is 25608935929. The next prime is 25608936019. The reversal of 25608935957 is 75953980652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25608935957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25608935896 and 25608935905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25608935557) 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 in 3 ways as a sum of consecutive naturals, for example, 1164042533 + ... + 1164042554.

It is an arithmetic number, because the mean of its divisors is an integer number (6984255264).

Almost surely, 2^25608935957 is an apocalyptic number.

It is an amenable number.

25608935957 is a deficient number, since it is larger than the sum of its proper divisors (2328085099).

25608935957 is a wasteful number, since it uses less digits than its factorization.

25608935957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328085098.

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 25608935957 in words is "twenty-five billion, six hundred eight million, nine hundred thirty-five thousand, nine hundred fifty-seven".