25860852787 has 32 divisors (see below), whose sum is σ = 33069464064. Its totient is φ = 19635436800.

The previous prime is 25860852781. The next prime is 25860852811. The reversal of 25860852787 is 78725806852.

It is a de Polignac number, because none of the positive numbers 2^k-25860852787 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25860852781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2782993 + ... + 2792269.

It is an arithmetic number, because the mean of its divisors is an integer number (1033420752).

Almost surely, 2^25860852787 is an apocalyptic number.

25860852787 is a deficient number, since it is larger than the sum of its proper divisors (7208611277).

25860852787 is a wasteful number, since it uses less digits than its factorization.

25860852787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219.

The product of its (nonzero) digits is 15052800, while the sum is 58.

The spelling of 25860852787 in words is "twenty-five billion, eight hundred sixty million, eight hundred fifty-two thousand, seven hundred eighty-seven".