25855024687 has 12 divisors (see below), whose sum is σ = 28024948776. Its totient is φ = 23832215280.

The previous prime is 25855024639. The next prime is 25855024721. The reversal of 25855024687 is 78642055852.

It is not a de Polignac number, because 25855024687 - 2¹¹ = 25855022639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25855024627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954489 + ... + 981202.

It is an arithmetic number, because the mean of its divisors is an integer number (2335412398).

Almost surely, 2^25855024687 is an apocalyptic number.

25855024687 is a deficient number, since it is larger than the sum of its proper divisors (2169924089).

25855024687 is a wasteful number, since it uses less digits than its factorization.

25855024687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935766 (or 1935747 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 52.

The spelling of 25855024687 in words is "twenty-five billion, eight hundred fifty-five million, twenty-four thousand, six hundred eighty-seven".