25884943660 has 12 divisors (see below), whose sum is σ = 54358381728. Its totient is φ = 10353977456.

The previous prime is 25884943603. The next prime is 25884943661. The reversal of 25884943660 is 6634948852.

It is not an unprimeable number, because it can be changed into a prime (25884943661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647123572 + ... + 647123611.

It is an arithmetic number, because the mean of its divisors is an integer number (4529865144).

Almost surely, 2^25884943660 is an apocalyptic number.

25884943660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25884943660 is an abundant number, since it is smaller than the sum of its proper divisors (28473438068).

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

25884943660 is a wasteful number, since it uses less digits than its factorization.

25884943660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294247192 (or 1294247190 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 25884943660 in words is "twenty-five billion, eight hundred eighty-four million, nine hundred forty-three thousand, six hundred sixty".