25025302053440 has 224 divisors, whose sum is σ = 65328223887360. Its totient is φ = 9075360153600.

The previous prime is 25025302053431. The next prime is 25025302053467. The reversal of 25025302053440 is 4435020352052.

It is a self number, because there is not a number n which added to its sum of digits gives 25025302053440.

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 31 ways as a sum of consecutive naturals, for example, 62570900 + ... + 62969580.

It is an arithmetic number, because the mean of its divisors is an integer number (291643856640).

Almost surely, 2^{25025302053440} is an apocalyptic number.

25025302053440 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 25025302053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32664111943680).

25025302053440 is an abundant number, since it is smaller than the sum of its proper divisors (40302921833920).

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

25025302053440 is a wasteful number, since it uses less digits than its factorization.

25025302053440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398981 (or 398971 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 25025302053440 in words is "twenty-five trillion, twenty-five billion, three hundred two million, fifty-three thousand, four hundred forty".