25530144120 has 192 divisors, whose sum is σ = 89852162400. Its totient is φ = 6249415680.

The previous prime is 25530144119. The next prime is 25530144151. The reversal of 25530144120 is 2144103552.

25530144120 is a `hidden beast` number, since 2 + 5 + 530 + 1 + 4 + 4 + 120 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 832011 + ... + 862149.

Almost surely, 2^25530144120 is an apocalyptic number.

25530144120 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 25530144120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44926081200).

25530144120 is an abundant number, since it is smaller than the sum of its proper divisors (64322018280).

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

25530144120 is a wasteful number, since it uses less digits than its factorization.

25530144120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30350 (or 30343 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 25530144120 its reverse (2144103552), we get a palindrome (27674247672).

The spelling of 25530144120 in words is "twenty-five billion, five hundred thirty million, one hundred forty-four thousand, one hundred twenty".