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25328486880 = 25325233112459
BaseRepresentation
bin10111100101101100…
…100000100111100000
32102101012000110002200
4113211230200213200
5403333043040010
615345153213200
71554443405034
oct274554404740
972335013080
1025328486880
11a8182a8094
124aaa561200
1325085c9658
141323c541c4
159d395bcc0
hex5e5b209e0

25328486880 has 288 divisors, whose sum is σ = 90518238720. Its totient is φ = 6437207040.

The previous prime is 25328486801. The next prime is 25328486891. The reversal of 25328486880 is 8868482352.

25328486880 is a `hidden beast` number, since 2 + 532 + 8 + 48 + 68 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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, 10299091 + ... + 10301549.

It is an arithmetic number, because the mean of its divisors is an integer number (314299440).

Almost surely, 225328486880 is an apocalyptic number.

25328486880 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 25328486880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45259119360).

25328486880 is an abundant number, since it is smaller than the sum of its proper divisors (65189751840).

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

25328486880 is a wasteful number, since it uses less digits than its factorization.

25328486880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 25328486880 in words is "twenty-five billion, three hundred twenty-eight million, four hundred eighty-six thousand, eight hundred eighty".