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13823925 = 3521989109
BaseRepresentation
bin110100101110…
…111110110101
3222000022212020
4310232332311
512014331200
61212143353
7225333663
oct64567665
928008766
1013823925
117892135
124767b59
132b3024b
141b9bc33
151330ea0
hexd2efb5

13823925 has 48 divisors (see below), whose sum is σ = 24552000. Its totient is φ = 6842880.

The previous prime is 13823921. The next prime is 13823947. The reversal of 13823925 is 52932831.

It is not a de Polignac number, because 13823925 - 22 = 13823921 is a prime.

It is a super-2 number, since 2×138239252 = 382201804811250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13823921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126771 + ... + 126879.

It is an arithmetic number, because the mean of its divisors is an integer number (511500).

Almost surely, 213823925 is an apocalyptic number.

13823925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13823925 is a deficient number, since it is larger than the sum of its proper divisors (10728075).

13823925 is a wasteful number, since it uses less digits than its factorization.

13823925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 225 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 13823925 is about 3718.0539264513. The cubic root of 13823925 is about 239.9995659714. Note that the first 3 decimals are identical.

The spelling of 13823925 in words is "thirteen million, eight hundred twenty-three thousand, nine hundred twenty-five".

Divisors: 1 3 5 15 19 25 57 75 89 95 109 267 285 327 445 475 545 1335 1425 1635 1691 2071 2225 2725 5073 6213 6675 8175 8455 9701 10355 25365 29103 31065 42275 48505 51775 126825 145515 155325 184319 242525 552957 727575 921595 2764785 4607975 13823925