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18075925 = 527103291
BaseRepresentation
bin100010011110…
…1000100010101
31021000100111201
41010331010111
514111412200
61443232501
7306433330
oct104750425
937010451
1018075925
11a22678a
126078731
13398b71a
142587617
1518c0c6a
hex113d115

18075925 has 12 divisors (see below), whose sum is σ = 25616416. Its totient is φ = 12394800.

The previous prime is 18075919. The next prime is 18075929. The reversal of 18075925 is 52957081.

It is not a de Polignac number, because 18075925 - 29 = 18075413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51471 + ... + 51820.

Almost surely, 218075925 is an apocalyptic number.

It is an amenable number.

18075925 is a deficient number, since it is larger than the sum of its proper divisors (7540491).

18075925 is a wasteful number, since it uses less digits than its factorization.

18075925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103308 (or 103303 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 18075925 is about 4251.5791183982. The cubic root of 18075925 is about 262.4421036336.

The spelling of 18075925 in words is "eighteen million, seventy-five thousand, nine hundred twenty-five".

Divisors: 1 5 7 25 35 175 103291 516455 723037 2582275 3615185 18075925