25552400520000 has 280 divisors, whose sum is σ = 84523968372096. Its totient is φ = 6810604544000.

The previous prime is 25552400519999. The next prime is 25552400520043. The reversal of 25552400520000 is 2500425552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 25552400520000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 247508392 + ... + 247611608.

Almost surely, 2^{25552400520000} is an apocalyptic number.

25552400520000 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 25552400520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42261984186048).

25552400520000 is an abundant number, since it is smaller than the sum of its proper divisors (58971567852096).

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

25552400520000 is a wasteful number, since it uses less digits than its factorization.

25552400520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105315 (or 105290 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

Adding to 25552400520000 its reverse (2500425552), we get a palindrome (25554900945552).

The spelling of 25552400520000 in words is "twenty-five trillion, five hundred fifty-two billion, four hundred million, five hundred twenty thousand".