Search a number
-
+
230630525 = 529225221
BaseRepresentation
bin11011011111100…
…10010001111101
3121001222020121022
431233302101331
5433020134100
634515113525
75500220126
oct1557622175
9531866538
10230630525
11109204144
12652a28a5
1338a20288
14228b704d
15153a9e85
hexdbf247d

230630525 has 6 divisors (see below), whose sum is σ = 285981882. Its totient is φ = 184504400.

The previous prime is 230630513. The next prime is 230630527. The reversal of 230630525 is 525036032.

It can be written as a sum of positive squares in 3 ways, for example, as 228484 + 230402041 = 478^2 + 15179^2 .

It is not a de Polignac number, because 230630525 - 220 = 229581949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230630494 and 230630503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230630527) 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, 4612586 + ... + 4612635.

It is an arithmetic number, because the mean of its divisors is an integer number (47663647).

Almost surely, 2230630525 is an apocalyptic number.

230630525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

230630525 is a deficient number, since it is larger than the sum of its proper divisors (55351357).

230630525 is an equidigital number, since it uses as much as digits as its factorization.

230630525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9225231 (or 9225226 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 230630525 is about 15186.5244542654. The cubic root of 230630525 is about 613.2519378109.

Adding to 230630525 its reverse (525036032), we get a palindrome (755666557).

The spelling of 230630525 in words is "two hundred thirty million, six hundred thirty thousand, five hundred twenty-five".

Divisors: 1 5 25 9225221 46126105 230630525