25601127805 has 16 divisors (see below), whose sum is σ = 33658058304. Its totient is φ = 18539082880.

The previous prime is 25601127803. The next prime is 25601127833. The reversal of 25601127805 is 50872110652.

It is not a de Polignac number, because 25601127805 - 2¹ = 25601127803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25601127803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986059 + ... + 1011688.

It is an arithmetic number, because the mean of its divisors is an integer number (2103628644).

Almost surely, 2^25601127805 is an apocalyptic number.

It is an amenable number.

25601127805 is a deficient number, since it is larger than the sum of its proper divisors (8056930499).

25601127805 is a wasteful number, since it uses less digits than its factorization.

25601127805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997996.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 25601127805 in words is "twenty-five billion, six hundred one million, one hundred twenty-seven thousand, eight hundred five".