25904085017 has 4 divisors (see below), whose sum is σ = 26101826256. Its totient is φ = 25706343780.

The previous prime is 25904084993. The next prime is 25904085079. The reversal of 25904085017 is 71058040952.

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 not a de Polignac number, because 25904085017 - 2¹⁴ = 25904068633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25904085217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98870423 + ... + 98870684.

It is an arithmetic number, because the mean of its divisors is an integer number (6525456564).

Almost surely, 2^25904085017 is an apocalyptic number.

It is an amenable number.

25904085017 is a deficient number, since it is larger than the sum of its proper divisors (197741239).

25904085017 is a wasteful number, since it uses less digits than its factorization.

25904085017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197741238.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 25904085017 in words is "twenty-five billion, nine hundred four million, eighty-five thousand, seventeen".