25555663011660 has 48 divisors (see below), whose sum is σ = 71587645285632. Its totient is φ = 6811815960000.

The previous prime is 25555663011649. The next prime is 25555663011721. The reversal of 25555663011660 is 6611036655552.

It is a super-3 number, since 3×25555663011660³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 94473496 + ... + 94743615.

It is an arithmetic number, because the mean of its divisors is an integer number (1491409276784).

Almost surely, 2^{25555663011660} is an apocalyptic number.

25555663011660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25555663011660 is an abundant number, since it is smaller than the sum of its proper divisors (46031982273972).

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

25555663011660 is a wasteful number, since it uses less digits than its factorization.

25555663011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189219374 (or 189219372 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 25555663011660 in words is "twenty-five trillion, five hundred fifty-five billion, six hundred sixty-three million, eleven thousand, six hundred sixty".