25505211015116 has 96 divisors (see below), whose sum is σ = 54390743447040. Its totient is φ = 10233195323904.

The previous prime is 25505211015103. The next prime is 25505211015133. The reversal of 25505211015116 is 61151011250552.

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, 2117531 + ... + 7449453.

It is an arithmetic number, because the mean of its divisors is an integer number (566570244240).

Almost surely, 2^{25505211015116} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25505211015116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27195371723520).

25505211015116 is an abundant number, since it is smaller than the sum of its proper divisors (28885532431924).

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

25505211015116 is a wasteful number, since it uses less digits than its factorization.

25505211015116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332143 (or 5332141 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 35.

Adding to 25505211015116 its reverse (61151011250552), we get a palindrome (86656222265668).

The spelling of 25505211015116 in words is "twenty-five trillion, five hundred five billion, two hundred eleven million, fifteen thousand, one hundred sixteen".