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13875025 = 524312907
BaseRepresentation
bin110100111011…
…011101010001
3222002220221211
4310323131101
512023000100
61213220121
7225635653
oct64733521
928086854
1013875025
11791756a
124791641
132b4a598
141bb26d3
1513411ba
hexd3b751

13875025 has 12 divisors (see below), whose sum is σ = 17606512. Its totient is φ = 10841040.

The previous prime is 13875023. The next prime is 13875031. The reversal of 13875025 is 52057831.

It is not a de Polignac number, because 13875025 - 21 = 13875023 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13875023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5379 + ... + 7528.

Almost surely, 213875025 is an apocalyptic number.

It is an amenable number.

13875025 is a deficient number, since it is larger than the sum of its proper divisors (3731487).

13875025 is a wasteful number, since it uses less digits than its factorization.

13875025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12955 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 13875025 is about 3724.9194622166. The cubic root of 13875025 is about 240.2949210064.

The spelling of 13875025 in words is "thirteen million, eight hundred seventy-five thousand, twenty-five".

Divisors: 1 5 25 43 215 1075 12907 64535 322675 555001 2775005 13875025