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13525231380 = 2235823273901
BaseRepresentation
bin11001001100010101…
…01010011100010100
31021220121002221110120
430212022222130110
5210144424401010
610114032351540
7656111366313
oct144612523424
937817087416
1013525231380
115810705581
1227556a55b0
13137714c3bb
1492440c27a
15542600e70
hex3262aa714

13525231380 has 48 divisors (see below), whose sum is σ = 37916801664. Its totient is φ = 3602332800.

The previous prime is 13525231373. The next prime is 13525231417. The reversal of 13525231380 is 8313252531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87571 + ... + 186330.

It is an arithmetic number, because the mean of its divisors is an integer number (789933368).

Almost surely, 213525231380 is an apocalyptic number.

13525231380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13525231380 is an abundant number, since it is smaller than the sum of its proper divisors (24391570284).

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

13525231380 is a wasteful number, since it uses less digits than its factorization.

13525231380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274736 (or 274734 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 13525231380 in words is "thirteen billion, five hundred twenty-five million, two hundred thirty-one thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 823 1646 2469 3292 4115 4938 8230 9876 12345 16460 24690 49380 273901 547802 821703 1095604 1369505 1643406 2739010 3286812 4108515 5478020 8217030 16434060 225420523 450841046 676261569 901682092 1127102615 1352523138 2254205230 2705046276 3381307845 4508410460 6762615690 13525231380