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85715725 = 524996871
BaseRepresentation
bin1010001101111…
…10101100001101
312222021210212111
411012332230031
5133420400400
612301104021
72060400034
oct506765415
9188253774
1085715725
1144425547
1224858011
13149b1b84
14b55371b
1577d23ba
hex51beb0d

85715725 has 12 divisors (see below), whose sum is σ = 106516000. Its totient is φ = 68425200.

The previous prime is 85715723. The next prime is 85715737. The reversal of 85715725 is 52751758.

It is not a de Polignac number, because 85715725 - 21 = 85715723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85715723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9040 + ... + 15910.

Almost surely, 285715725 is an apocalyptic number.

It is an amenable number.

85715725 is a deficient number, since it is larger than the sum of its proper divisors (20800275).

85715725 is a wasteful number, since it uses less digits than its factorization.

85715725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380 (or 7375 counting only the distinct ones).

The product of its digits is 98000, while the sum is 40.

The square root of 85715725 is about 9258.2787277118. The cubic root of 85715725 is about 440.9136061722.

The spelling of 85715725 in words is "eighty-five million, seven hundred fifteen thousand, seven hundred twenty-five".

Divisors: 1 5 25 499 2495 6871 12475 34355 171775 3428629 17143145 85715725