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13942825 = 521342901
BaseRepresentation
bin110101001100…
…000000101001
3222020100221221
4311030000221
512032132300
61214502041
7226340431
oct65140051
928210857
1013942825
1179634a6
124804921
132b723c0
141bcd2c1
15135631a
hexd4c029

13942825 has 12 divisors (see below), whose sum is σ = 18619468. Its totient is φ = 10296000.

The previous prime is 13942811. The next prime is 13942861. The reversal of 13942825 is 52824931.

It can be written as a sum of positive squares in 6 ways, for example, as 488601 + 13454224 = 699^2 + 3668^2 .

It is not a de Polignac number, because 13942825 - 211 = 13940777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21126 + ... + 21775.

Almost surely, 213942825 is an apocalyptic number.

It is an amenable number.

13942825 is a deficient number, since it is larger than the sum of its proper divisors (4676643).

13942825 is a wasteful number, since it uses less digits than its factorization.

13942825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42924 (or 42919 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 13942825 is about 3734.0092394101. The cubic root of 13942825 is about 240.6856838008.

The spelling of 13942825 in words is "thirteen million, nine hundred forty-two thousand, eight hundred twenty-five".

Divisors: 1 5 13 25 65 325 42901 214505 557713 1072525 2788565 13942825