25502541211000 has 256 divisors, whose sum is σ = 72377552332800. Its totient is φ = 8210628864000.

The previous prime is 25502541210967. The next prime is 25502541211001. The reversal of 25502541211000 is 11214520552.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 25502541211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502541211001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51996915 + ... + 52485085.

It is an arithmetic number, because the mean of its divisors is an integer number (282724813800).

Almost surely, 2^{25502541211000} is an apocalyptic number.

25502541211000 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 25502541211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36188776166400).

25502541211000 is an abundant number, since it is smaller than the sum of its proper divisors (46875011121800).

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

25502541211000 is a wasteful number, since it uses less digits than its factorization.

25502541211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488655 (or 488641 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 25502541211000 its reverse (11214520552), we get a palindrome (25513755731552).

The spelling of 25502541211000 in words is "twenty-five trillion, five hundred two billion, five hundred forty-one million, two hundred eleven thousand".