25200455504 has 80 divisors (see below), whose sum is σ = 57390576768. Its totient is φ = 10493369856.

The previous prime is 25200455491. The next prime is 25200455509. The reversal of 25200455504 is 40555400252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25200455509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3199379 + ... + 3207245.

Almost surely, 2^25200455504 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 25200455504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28695288384).

25200455504 is an abundant number, since it is smaller than the sum of its proper divisors (32190121264).

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

25200455504 is a wasteful number, since it uses less digits than its factorization.

25200455504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692 (or 8686 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

Adding to 25200455504 its reverse (40555400252), we get a palindrome (65755855756).

The spelling of 25200455504 in words is "twenty-five billion, two hundred million, four hundred fifty-five thousand, five hundred four".