25505025500000 has 84 divisors (see below), whose sum is σ = 62765471513556. Its totient is φ = 10202010000000.

The previous prime is 25505025499973. The next prime is 25505025500039. The reversal of 25505025500000 is 552050552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 25005026 + ... + 26005025.

It is an arithmetic number, because the mean of its divisors is an integer number (747207994209).

Almost surely, 2^{25505025500000} is an apocalyptic number.

25505025500000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505025500000 is an abundant number, since it is smaller than the sum of its proper divisors (37260446013556).

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

25505025500000 is an frugal number, since it uses more digits than its factorization.

25505025500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51010091 (or 51010058 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

Adding to 25505025500000 its reverse (552050552), we get a palindrome (25505577550552).

The spelling of 25505025500000 in words is "twenty-five trillion, five hundred five billion, twenty-five million, five hundred thousand".