25540064112 has 40 divisors (see below), whose sum is σ = 65986689280. Its totient is φ = 8512297920.

The previous prime is 25540064089. The next prime is 25540064117. The reversal of 25540064112 is 21146004552.

It is a self number, because there is not a number n which added to its sum of digits gives 25540064112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540064117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422439 + ... + 479097.

It is an arithmetic number, because the mean of its divisors is an integer number (1649667232).

Almost surely, 2^25540064112 is an apocalyptic number.

It is an amenable number.

25540064112 is an abundant number, since it is smaller than the sum of its proper divisors (40446625168).

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

25540064112 is a wasteful number, since it uses less digits than its factorization.

25540064112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66061 (or 66055 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 25540064112 its reverse (21146004552), we get a palindrome (46686068664).

The spelling of 25540064112 in words is "twenty-five billion, five hundred forty million, sixty-four thousand, one hundred twelve".