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20525112255 = 3523252123599
BaseRepresentation
bin10011000111011001…
…000101101110111111
31221222102121201211210
4103013121011232333
5314013412043010
613232404215503
71324426401264
oct230731055677
957872551753
1020525112255
11878298869a
123b8999a593
131c2141304b
14dc9d3726b
15801de4b20
hex4c7645bbf

20525112255 has 32 divisors (see below), whose sum is σ = 34283059200. Its totient is φ = 10466184960.

The previous prime is 20525112203. The next prime is 20525112269. The reversal of 20525112255 is 55221152502.

It is not a de Polignac number, because 20525112255 - 210 = 20525111231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857946 + ... + 881544.

It is an arithmetic number, because the mean of its divisors is an integer number (1071345600).

Almost surely, 220525112255 is an apocalyptic number.

20525112255 is a deficient number, since it is larger than the sum of its proper divisors (13757946945).

20525112255 is a wasteful number, since it uses less digits than its factorization.

20525112255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26151.

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 20525112255 its reverse (55221152502), we get a palindrome (75746264757).

The spelling of 20525112255 in words is "twenty billion, five hundred twenty-five million, one hundred twelve thousand, two hundred fifty-five".

Divisors: 1 3 5 15 23 69 115 345 2521 7563 12605 23599 37815 57983 70797 117995 173949 289915 353985 542777 869745 1628331 2713885 8141655 59493079 178479237 297465395 892396185 1368340817 4105022451 6841704085 20525112255