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8081325 = 325272733
BaseRepresentation
bin11110110100111110101101
3120012120111100
4132310332231
54032100300
6445113313
7125455500
oct36647655
916176440
108081325
11461a68a
122858839
13189c465
141105137
15a99700
hex7b4fad

8081325 has 54 divisors (see below), whose sum is σ = 16860714. Its totient is φ = 3689280.

The previous prime is 8081323. The next prime is 8081351. The reversal of 8081325 is 5231808.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2350089 + 5731236 = 1533^2 + 2394^2 .

It is not a de Polignac number, because 8081325 - 21 = 8081323 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081323) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10659 + ... + 11391.

Almost surely, 28081325 is an apocalyptic number.

It is an amenable number.

8081325 is an abundant number, since it is smaller than the sum of its proper divisors (8779389).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8081325 is a wasteful number, since it uses less digits than its factorization.

8081325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8081325 is about 2842.7671378430. The cubic root of 8081325 is about 200.6754247725.

The spelling of 8081325 in words is "eight million, eighty-one thousand, three hundred twenty-five".

Divisors: 1 3 5 7 9 15 21 25 35 45 49 63 75 105 147 175 225 245 315 441 525 733 735 1225 1575 2199 2205 3665 3675 5131 6597 10995 11025 15393 18325 25655 32985 35917 46179 54975 76965 107751 128275 164925 179585 230895 323253 384825 538755 897925 1154475 1616265 2693775 8081325