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25138048 = 271315107
BaseRepresentation
bin101111111100…
…1001110000000
31202022010220211
41133321032000
522413404143
62254443504
7423445525
oct137711600
952263824
1025138048
111320a651
128503594
135291cb0
1434a514c
15231849d
hex17f9380

25138048 has 32 divisors (see below), whose sum is σ = 53935560. Its totient is φ = 11601408.

The previous prime is 25138033. The next prime is 25138049. The reversal of 25138048 is 84083152.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138049) 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, 5890 + ... + 9217.

Almost surely, 225138048 is an apocalyptic number.

It is an amenable number.

25138048 is an abundant number, since it is smaller than the sum of its proper divisors (28797512).

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

25138048 is a wasteful number, since it uses less digits than its factorization.

25138048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15134 (or 15122 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 25138048 is about 5013.7857951851. The cubic root of 25138048 is about 292.9389926059.

The spelling of 25138048 in words is "twenty-five million, one hundred thirty-eight thousand, forty-eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 208 416 832 1664 15107 30214 60428 120856 196391 241712 392782 483424 785564 966848 1571128 1933696 3142256 6284512 12569024 25138048