25519448880 has 120 divisors (see below), whose sum is σ = 86151985920. Its totient is φ = 6769520640.

The previous prime is 25519448879. The next prime is 25519448887. The reversal of 25519448880 is 8884491552.

25519448880 is a `hidden beast` number, since 2 + 5 + 519 + 4 + 48 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×25519448880² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25519448887) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 44736 + ... + 230304.

It is an arithmetic number, because the mean of its divisors is an integer number (717933216).

Almost surely, 2^25519448880 is an apocalyptic number.

25519448880 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 25519448880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43075992960).

25519448880 is an abundant number, since it is smaller than the sum of its proper divisors (60632537040).

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

25519448880 is a wasteful number, since it uses less digits than its factorization.

25519448880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185779 (or 185770 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 25519448880 in words is "twenty-five billion, five hundred nineteen million, four hundred forty-eight thousand, eight hundred eighty".