25508275305 has 16 divisors (see below), whose sum is σ = 40815544704. Its totient is φ = 13603645440.

The previous prime is 25508275283. The next prime is 25508275313. The reversal of 25508275305 is 50357280552.

It is a happy number.

It is not a de Polignac number, because 25508275305 - 2⁸ = 25508275049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315177 + ... + 387753.

It is an arithmetic number, because the mean of its divisors is an integer number (2550971544).

Almost surely, 2^25508275305 is an apocalyptic number.

It is an amenable number.

25508275305 is a deficient number, since it is larger than the sum of its proper divisors (15307269399).

25508275305 is a wasteful number, since it uses less digits than its factorization.

25508275305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96016.

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 25508275305 in words is "twenty-five billion, five hundred eight million, two hundred seventy-five thousand, three hundred five".