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8136925 = 52325477
BaseRepresentation
bin11111000010100011011101
3120022101202121
4133002203131
54040340200
6450222541
7126106546
oct37024335
916271677
108136925
114658435
122884a51
1318bb864
14111b4cd
15aaae1a
hex7c28dd

8136925 has 6 divisors (see below), whose sum is σ = 10089818. Its totient is φ = 6509520.

The previous prime is 8136913. The next prime is 8136943. The reversal of 8136925 is 5296318.

It can be written as a sum of positive squares in 3 ways, for example, as 1490841 + 6646084 = 1221^2 + 2578^2 .

It is not a de Polignac number, because 8136925 - 25 = 8136893 is a prime.

It is a Duffinian number.

8136925 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162714 + ... + 162763.

Almost surely, 28136925 is an apocalyptic number.

It is an amenable number.

8136925 is a deficient number, since it is larger than the sum of its proper divisors (1952893).

8136925 is a wasteful number, since it uses less digits than its factorization.

8136925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325487 (or 325482 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 8136925 is about 2852.5295791630. The cubic root of 8136925 is about 201.1345929891.

The spelling of 8136925 in words is "eight million, one hundred thirty-six thousand, nine hundred twenty-five".

Divisors: 1 5 25 325477 1627385 8136925