Search a number
-
+
7825078485 = 325730780917
BaseRepresentation
bin1110100100110100…
…10011100011010101
3202012100021011200200
413102122103203111
5112011210002420
63332250331113
7364625032620
oct72232234325
922170234620
107825078485
113356064314
121624729a99
13979229973
14543372db7
1530be96b90
hex1d26938d5

7825078485 has 48 divisors (see below), whose sum is σ = 15551792256. Its totient is φ = 3565482624.

The previous prime is 7825078451. The next prime is 7825078489. The reversal of 7825078485 is 5848705287.

7825078485 is a `hidden beast` number, since 78 + 25 + 0 + 78 + 485 = 666.

It is not a de Polignac number, because 7825078485 - 28 = 7825078229 is a prime.

It is a super-2 number, since 2×78250784852 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7825078489) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 56247 + ... + 137163.

It is an arithmetic number, because the mean of its divisors is an integer number (323995672).

Almost surely, 27825078485 is an apocalyptic number.

It is an amenable number.

7825078485 is a deficient number, since it is larger than the sum of its proper divisors (7726713771).

7825078485 is a wasteful number, since it uses less digits than its factorization.

7825078485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81242 (or 81239 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 54.

The square root of 7825078485 is about 88459.4736871071. The cubic root of 7825078485 is about 1985.3156559689.

The spelling of 7825078485 in words is "seven billion, eight hundred twenty-five million, seventy-eight thousand, four hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 35 45 63 105 307 315 921 1535 2149 2763 4605 6447 10745 13815 19341 32235 80917 96705 242751 404585 566419 728253 1213755 1699257 2832095 3641265 5097771 8496285 24841519 25488855 74524557 124207595 173890633 223573671 372622785 521671899 869453165 1117868355 1565015697 2608359495 7825078485