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20125101260 = 22511109783389
BaseRepresentation
bin10010101111100011…
…001010110011001100
31220221112221001220202
4102233203022303030
5312204011220020
613124554433032
71311501352415
oct225743126314
956845831822
1020125101260
1185981054a0
123a97a32778
131b89599754
14d8cb6c80c
157cbc2ce75
hex4af8caccc

20125101260 has 48 divisors (see below), whose sum is σ = 46147358880. Its totient is φ = 7311459840.

The previous prime is 20125101253. The next prime is 20125101281. The reversal of 20125101260 is 6210152102.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 199646 + ... + 283034.

It is an arithmetic number, because the mean of its divisors is an integer number (961403310).

Almost surely, 220125101260 is an apocalyptic number.

20125101260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20125101260 is an abundant number, since it is smaller than the sum of its proper divisors (26022257620).

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

20125101260 is a wasteful number, since it uses less digits than its factorization.

20125101260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84506 (or 84504 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 20125101260 its reverse (6210152102), we get a palindrome (26335253362).

The spelling of 20125101260 in words is "twenty billion, one hundred twenty-five million, one hundred one thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1097 2194 4388 5485 10970 12067 21940 24134 48268 60335 83389 120670 166778 241340 333556 416945 833890 917279 1667780 1834558 3669116 4586395 9172790 18345580 91477733 182955466 365910932 457388665 914777330 1006255063 1829554660 2012510126 4025020252 5031275315 10062550630 20125101260