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25680608 = 251747207
BaseRepresentation
bin110000111110…
…1101011100000
31210022201011122
41201331223200
523033234413
62314231412
7431165402
oct141755340
953281148
1025680608
1113550248
128725568
135421c35
1435a6b72
1523c4108
hex187dae0

25680608 has 24 divisors (see below), whose sum is σ = 53533872. Its totient is φ = 12084736.

The previous prime is 25680607. The next prime is 25680643. The reversal of 25680608 is 80608652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25680607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23060 + ... + 24147.

It is an arithmetic number, because the mean of its divisors is an integer number (2230578).

Almost surely, 225680608 is an apocalyptic number.

It is an amenable number.

25680608 is an abundant number, since it is smaller than the sum of its proper divisors (27853264).

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

25680608 is a wasteful number, since it uses less digits than its factorization.

25680608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47234 (or 47226 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 25680608 is about 5067.6037729878. The cubic root of 25680608 is about 295.0315316291.

The spelling of 25680608 in words is "twenty-five million, six hundred eighty thousand, six hundred eight".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 47207 94414 188828 377656 755312 802519 1510624 1605038 3210076 6420152 12840304 25680608