25305502505500 has 48 divisors (see below), whose sum is σ = 63162534262464. Its totient is φ = 8676172286400.

The previous prime is 25305502505473. The next prime is 25305502505539. The reversal of 25305502505500 is 550520550352.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25305502505500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3615068287 + ... + 3615075286.

It is an arithmetic number, because the mean of its divisors is an integer number (1315886130468).

Almost surely, 2^{25305502505500} is an apocalyptic number.

25305502505500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25305502505500 is an abundant number, since it is smaller than the sum of its proper divisors (37857031756964).

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

25305502505500 is a wasteful number, since it uses less digits than its factorization.

25305502505500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230143599 (or 7230143587 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 37.

The spelling of 25305502505500 in words is "twenty-five trillion, three hundred five billion, five hundred two million, five hundred five thousand, five hundred".