25500560085 has 192 divisors, whose sum is σ = 59650246656. Its totient is φ = 9732441600.

The previous prime is 25500560081. The next prime is 25500560087. The reversal of 25500560085 is 58006500552.

25500560085 is a `hidden beast` number, since 25 + 500 + 56 + 0 + 0 + 85 = 666.

It is not a de Polignac number, because 25500560085 - 2² = 25500560081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500560081) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9503154 + ... + 9505836.

It is an arithmetic number, because the mean of its divisors is an integer number (310678368).

Almost surely, 2^25500560085 is an apocalyptic number.

It is an amenable number.

25500560085 is an abundant number, since it is smaller than the sum of its proper divisors (34149686571).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25500560085 is a wasteful number, since it uses less digits than its factorization.

25500560085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2933 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

It can be divided in two parts, 25500 and 560085, that added together give a palindrome (585585).

The spelling of 25500560085 in words is "twenty-five billion, five hundred million, five hundred sixty thousand, eighty-five".