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20200020625 = 54173227823
BaseRepresentation
bin10010110100000000…
…111101101010010001
31221010202220100222001
4102310000331222101
5312332201130000
613140232314001
71313401225261
oct226400755221
957122810861
1020200020625
118626426524
123ab8b42901
131b9bc6b435
14d98ab17a1
157d35cb46a
hex4b403da91

20200020625 has 40 divisors (see below), whose sum is σ = 25530677568. Its totient is φ = 15976392000.

The previous prime is 20200020623. The next prime is 20200020647. The reversal of 20200020625 is 52602000202.

It is not a de Polignac number, because 20200020625 - 21 = 20200020623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200020623) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24543964 + ... + 24544786.

Almost surely, 220200020625 is an apocalyptic number.

20200020625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20200020625 is a deficient number, since it is larger than the sum of its proper divisors (5330656943).

20200020625 is an equidigital number, since it uses as much as digits as its factorization.

20200020625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20200020625 its reverse (52602000202), we get a palindrome (72802020827).

The spelling of 20200020625 in words is "twenty billion, two hundred million, twenty thousand, six hundred twenty-five".

Divisors: 1 5 25 125 173 227 625 823 865 1135 4115 4325 5675 20575 21625 28375 39271 102875 108125 141875 142379 186821 196355 514375 711895 934105 981775 3559475 4670525 4908875 17797375 23352625 24544375 32320033 88986875 116763125 161600165 808000825 4040004125 20200020625