25554531043660 has 96 divisors (see below), whose sum is σ = 56400720203520. Its totient is φ = 9713554276608.

The previous prime is 25554531043609. The next prime is 25554531043673. The reversal of 25554531043660 is 6634013545552.

It is a super-2 number, since 2×25554531043660² (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 31 ways as a sum of consecutive naturals, for example, 728883211 + ... + 728918269.

It is an arithmetic number, because the mean of its divisors is an integer number (587507502120).

Almost surely, 2^{25554531043660} is an apocalyptic number.

25554531043660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25554531043660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28200360101760).

25554531043660 is an abundant number, since it is smaller than the sum of its proper divisors (30846189159860).

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

25554531043660 is a wasteful number, since it uses less digits than its factorization.

25554531043660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58055 (or 58053 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 25554531043660 in words is "twenty-five trillion, five hundred fifty-four billion, five hundred thirty-one million, forty-three thousand, six hundred sixty".