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57080725 = 5213175633
BaseRepresentation
bin1101100110111…
…1101110010101
310222102000000221
43121233232111
5104103040400
65355234341
71262115052
oct331575625
9128360027
1057080725
112a247659
12171489b1
13ba972a0
14781c029
155027c1a
hex366fb95

57080725 has 12 divisors (see below), whose sum is σ = 76225156. Its totient is φ = 42151680.

The previous prime is 57080669. The next prime is 57080791. The reversal of 57080725 is 52708075.

It can be written as a sum of positive squares in 6 ways, for example, as 9622404 + 47458321 = 3102^2 + 6889^2 .

It is not a de Polignac number, because 57080725 - 29 = 57080213 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87492 + ... + 88141.

Almost surely, 257080725 is an apocalyptic number.

It is an amenable number.

57080725 is a deficient number, since it is larger than the sum of its proper divisors (19144431).

57080725 is a wasteful number, since it uses less digits than its factorization.

57080725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175656 (or 175651 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 57080725 is about 7555.1786874964. The cubic root of 57080725 is about 385.0317059400.

The spelling of 57080725 in words is "fifty-seven million, eighty thousand, seven hundred twenty-five".

Divisors: 1 5 13 25 65 325 175633 878165 2283229 4390825 11416145 57080725