25520556454848 has 2520 divisors, whose sum is σ = 99797249654784. Its totient is φ = 6419492352000.

The previous prime is 25520556454847. The next prime is 25520556454933. The reversal of 25520556454848 is 84845465502552.

25520556454848 is a `hidden beast` number, since 2 + 5 + 5 + 20 + 5 + 5 + 64 + 548 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25520556454847) by changing a digit.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 169010307573 + ... + 169010307723.

Almost surely, 2^{25520556454848} is an apocalyptic number.

25520556454848 is a gapful number since it is divisible by the number (28) 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 25520556454848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49898624827392).

25520556454848 is an abundant number, since it is smaller than the sum of its proper divisors (74276693199936).

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

25520556454848 is a wasteful number, since it uses less digits than its factorization.

25520556454848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 307200000, while the sum is 63.

The spelling of 25520556454848 in words is "twenty-five trillion, five hundred twenty billion, five hundred fifty-six million, four hundred fifty-four thousand, eight hundred forty-eight".