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25688748 = 2232140729
BaseRepresentation
bin110000111111…
…1101010101100
31210100010100010
41201333222230
523034014443
62314333220
7431231211
oct141775254
953303303
1025688748
1113556378
12872a210
135425857
1435a9b08
1523c6733
hex187faac

25688748 has 12 divisors (see below), whose sum is σ = 59940440. Its totient is φ = 8562912.

The previous prime is 25688737. The next prime is 25688753. The reversal of 25688748 is 84788652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25688697 and 25688706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070353 + ... + 1070376.

Almost surely, 225688748 is an apocalyptic number.

It is an amenable number.

25688748 is an abundant number, since it is smaller than the sum of its proper divisors (34251692).

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

25688748 is a wasteful number, since it uses less digits than its factorization.

25688748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140736 (or 2140734 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The square root of 25688748 is about 5068.4068502834. The cubic root of 25688748 is about 295.0627004520.

The spelling of 25688748 in words is "twenty-five million, six hundred eighty-eight thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 12 2140729 4281458 6422187 8562916 12844374 25688748