Search a number
-
+
12708258125 = 5420333213
BaseRepresentation
bin10111101010111100…
…01010000101001101
31012210122211101211212
423311132022011031
5202011303230000
65501010024205
7626631261143
oct136536120515
935718741755
1012708258125
115431531472
122567b78065
131276b05984
14887b05593
154e5a24c35
hex2f578a14d

12708258125 has 10 divisors (see below), whose sum is σ = 15880240134. Its totient is φ = 10166606000.

The previous prime is 12708258041. The next prime is 12708258131. The reversal of 12708258125 is 52185280721.

It can be written as a sum of positive squares in 5 ways, for example, as 1221991849 + 11486266276 = 34957^2 + 107174^2 .

It is not a de Polignac number, because 12708258125 - 220 = 12707209549 is a prime.

It is a super-2 number, since 2×127082581252 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10165982 + ... + 10167231.

Almost surely, 212708258125 is an apocalyptic number.

It is an amenable number.

12708258125 is a deficient number, since it is larger than the sum of its proper divisors (3171982009).

12708258125 is an frugal number, since it uses more digits than its factorization.

12708258125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20333233 (or 20333218 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 41.

The spelling of 12708258125 in words is "twelve billion, seven hundred eight million, two hundred fifty-eight thousand, one hundred twenty-five".

Divisors: 1 5 25 125 625 20333213 101666065 508330325 2541651625 12708258125