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385168825 = 5215406753
BaseRepresentation
bin10110111101010…
…011010110111001
3222211202121022001
4112331103112321
51242100400300
6102115301001
712354611116
oct2675232671
9884677261
10385168825
11188466048
12a8baa761
1361a4aa62
143922390d
1523c3416a
hex16f535b9

385168825 has 6 divisors (see below), whose sum is σ = 477609374. Its totient is φ = 308135040.

The previous prime is 385168811. The next prime is 385168829. The reversal of 385168825 is 528861583.

It can be written as a sum of positive squares in 3 ways, for example, as 21427641 + 363741184 = 4629^2 + 19072^2 .

It is not a de Polignac number, because 385168825 - 29 = 385168313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385168829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7703352 + ... + 7703401.

Almost surely, 2385168825 is an apocalyptic number.

It is an amenable number.

385168825 is a deficient number, since it is larger than the sum of its proper divisors (92440549).

385168825 is a wasteful number, since it uses less digits than its factorization.

385168825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15406763 (or 15406758 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 385168825 is about 19625.7184581864. The cubic root of 385168825 is about 727.5849540419.

The spelling of 385168825 in words is "three hundred eighty-five million, one hundred sixty-eight thousand, eight hundred twenty-five".

Divisors: 1 5 25 15406753 77033765 385168825