25544531100000 has 1152 divisors, whose sum is σ = 95011778856960. Its totient is φ = 5952128000000.

The previous prime is 25544531099977. The next prime is 25544531100001. The reversal of 25544531100000 is 113544552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25544531100001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 28040099545 + ... + 28040100455.

It is an arithmetic number, because the mean of its divisors is an integer number (82475502480).

Almost surely, 2^{25544531100000} is an apocalyptic number.

25544531100000 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 25544531100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47505889428480).

25544531100000 is an abundant number, since it is smaller than the sum of its proper divisors (69467247756960).

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

25544531100000 is a wasteful number, since it uses less digits than its factorization.

25544531100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 25544531100000 its reverse (113544552), we get a palindrome (25544644644552).

The spelling of 25544531100000 in words is "twenty-five trillion, five hundred forty-four billion, five hundred thirty-one million, one hundred thousand".