25777872905 has 16 divisors (see below), whose sum is σ = 32781158784. Its totient is φ = 19392572160.

The previous prime is 25777872851. The next prime is 25777872929. The reversal of 25777872905 is 50927877752.

It is not a de Polignac number, because 25777872905 - 2¹⁴ = 25777856521 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 29957 + ... + 229026.

It is an arithmetic number, because the mean of its divisors is an integer number (2048822424).

Almost surely, 2^25777872905 is an apocalyptic number.

It is an amenable number.

25777872905 is a deficient number, since it is larger than the sum of its proper divisors (7003285879).

25777872905 is a wasteful number, since it uses less digits than its factorization.

25777872905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260176.

The product of its (nonzero) digits is 17287200, while the sum is 59.

The spelling of 25777872905 in words is "twenty-five billion, seven hundred seventy-seven million, eight hundred seventy-two thousand, nine hundred five".