Search a number
-
+
12725905660 = 22513123139761
BaseRepresentation
bin10111101101000010…
…11110100011111100
31012211220000222201021
423312201132203330
5202030312440120
65502440153524
7630234261526
oct136641364374
935756028637
1012725905660
115440495306
122571a688a4
13127a6743c0
1488a1baa16
154e735daaa
hex2f685e8fc

12725905660 has 48 divisors (see below), whose sum is σ = 28804228992. Its totient is φ = 4694860800.

The previous prime is 12725905649. The next prime is 12725905667. The reversal of 12725905660 is 6650952721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12725905667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300180 + ... + 339940.

It is an arithmetic number, because the mean of its divisors is an integer number (600088104).

Almost surely, 212725905660 is an apocalyptic number.

12725905660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12725905660 is an abundant number, since it is smaller than the sum of its proper divisors (16078323332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12725905660 is a wasteful number, since it uses less digits than its factorization.

12725905660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41014 (or 41012 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 12725905660 in words is "twelve billion, seven hundred twenty-five million, nine hundred five thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1231 2462 4924 6155 12310 16003 24620 32006 39761 64012 79522 80015 159044 160030 198805 320060 397610 516893 795220 1033786 2067572 2584465 5168930 10337860 48945791 97891582 195783164 244728955 489457910 636295283 978915820 1272590566 2545181132 3181476415 6362952830 12725905660