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13345925 = 52533837
BaseRepresentation
bin110010111010…
…010010000101
3221010001011112
4302322102011
511404032200
61154014405
7221303255
oct62722205
927101145
1013345925
117595a9a
124577405
1329c37c8
141ab5965
151289535
hexcba485

13345925 has 6 divisors (see below), whose sum is σ = 16548978. Its totient is φ = 10676720.

The previous prime is 13345889. The next prime is 13345987. The reversal of 13345925 is 52954331.

It can be written as a sum of positive squares in 3 ways, for example, as 1635841 + 11710084 = 1279^2 + 3422^2 .

It is not a de Polignac number, because 13345925 - 26 = 13345861 is a prime.

It is a super-2 number, since 2×133459252 = 356227428211250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13345891 and 13345900.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 266894 + ... + 266943.

It is an arithmetic number, because the mean of its divisors is an integer number (2758163).

Almost surely, 213345925 is an apocalyptic number.

It is an amenable number.

13345925 is a deficient number, since it is larger than the sum of its proper divisors (3203053).

13345925 is an equidigital number, since it uses as much as digits as its factorization.

13345925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533847 (or 533842 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 13345925 is about 3653.2074947914. The cubic root of 13345925 is about 237.2008421720.

The spelling of 13345925 in words is "thirteen million, three hundred forty-five thousand, nine hundred twenty-five".

Divisors: 1 5 25 533837 2669185 13345925