25553447859840 has 128 divisors (see below), whose sum is σ = 82832151268800. Its totient is φ = 6698756923392.

The previous prime is 25553447859839. The next prime is 25553447859881. The reversal of 25553447859840 is 4895874435552.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×25553447859840² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112675597 + ... + 112902156.

Almost surely, 2^{25553447859840} is an apocalyptic number.

25553447859840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25553447859840 is an abundant number, since it is smaller than the sum of its proper divisors (57278703408960).

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

25553447859840 is a wasteful number, since it uses less digits than its factorization.

25553447859840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225577834 (or 225577822 counting only the distinct ones).

The product of its (nonzero) digits is 967680000, while the sum is 69.

The spelling of 25553447859840 in words is "twenty-five trillion, five hundred fifty-three billion, four hundred forty-seven million, eight hundred fifty-nine thousand, eight hundred forty".