25878281711 has 16 divisors (see below), whose sum is σ = 27357751296. Its totient is φ = 24446100000.

The previous prime is 25878281701. The next prime is 25878281717. The reversal of 25878281711 is 11718287852.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25878281711 - 2⁶ = 25878281647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25878281711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25878281717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164096 + ... + 280506.

It is an arithmetic number, because the mean of its divisors is an integer number (1709859456).

Almost surely, 2^25878281711 is an apocalyptic number.

25878281711 is a deficient number, since it is larger than the sum of its proper divisors (1479469585).

25878281711 is a wasteful number, since it uses less digits than its factorization.

25878281711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116614.

The product of its digits is 501760, while the sum is 50.

The spelling of 25878281711 in words is "twenty-five billion, eight hundred seventy-eight million, two hundred eighty-one thousand, seven hundred eleven".