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13685125 = 53109481
BaseRepresentation
bin110100001101…
…000110000101
3221202021110111
4310031012011
512000411000
61205153021
7224215216
oct64150605
927667414
1013685125
1177a7923
1246bb771
132ab200c
141b6340d
151304cba
hexd0d185

13685125 has 8 divisors (see below), whose sum is σ = 17079192. Its totient is φ = 10948000.

The previous prime is 13685101. The next prime is 13685141. The reversal of 13685125 is 52158631.

It can be written as a sum of positive squares in 4 ways, for example, as 2172676 + 11512449 = 1474^2 + 3393^2 .

It is not a de Polignac number, because 13685125 - 25 = 13685093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54616 + ... + 54865.

It is an arithmetic number, because the mean of its divisors is an integer number (2134899).

Almost surely, 213685125 is an apocalyptic number.

It is an amenable number.

13685125 is a deficient number, since it is larger than the sum of its proper divisors (3394067).

13685125 is an equidigital number, since it uses as much as digits as its factorization.

13685125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109496 (or 109486 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 13685125 is about 3699.3411575577. The cubic root of 13685125 is about 239.1936188888.

The spelling of 13685125 in words is "thirteen million, six hundred eighty-five thousand, one hundred twenty-five".

Divisors: 1 5 25 125 109481 547405 2737025 13685125