25531454112120 has 256 divisors, whose sum is σ = 93086632512000. Its totient is φ = 6173111347200.

The previous prime is 25531454112091. The next prime is 25531454112133. The reversal of 25531454112120 is 2121145413552.

25531454112120 is a `hidden beast` number, since 2 + 5 + 531 + 4 + 5 + 4 + 112 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1667280 + ... + 7337760.

It is an arithmetic number, because the mean of its divisors is an integer number (363619658250).

Almost surely, 2^{25531454112120} is an apocalyptic number.

25531454112120 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 25531454112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46543316256000).

25531454112120 is an abundant number, since it is smaller than the sum of its proper divisors (67555178399880).

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

25531454112120 is a wasteful number, since it uses less digits than its factorization.

25531454112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670891 (or 5670881 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 25531454112120 its reverse (2121145413552), we get a palindrome (27652599525672).

The spelling of 25531454112120 in words is "twenty-five trillion, five hundred thirty-one billion, four hundred fifty-four million, one hundred twelve thousand, one hundred twenty".