25870780705 has 48 divisors (see below), whose sum is σ = 39225134592. Its totient is φ = 16033564800.

The previous prime is 25870780687. The next prime is 25870780717. The reversal of 25870780705 is 50708707852.

It is a happy number.

It is not a de Polignac number, because 25870780705 - 2¹³ = 25870772513 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 715000 + ... + 750310.

It is an arithmetic number, because the mean of its divisors is an integer number (817190304).

Almost surely, 2^25870780705 is an apocalyptic number.

It is an amenable number.

25870780705 is a deficient number, since it is larger than the sum of its proper divisors (13354353887).

25870780705 is a wasteful number, since it uses less digits than its factorization.

25870780705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35518 (or 35507 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 49.

The spelling of 25870780705 in words is "twenty-five billion, eight hundred seventy million, seven hundred eighty thousand, seven hundred five".