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20052055525 = 524119562981
BaseRepresentation
bin10010101011001100…
…100001010111100101
31220202110110222000011
4102223030201113211
5312031311234100
613113425050221
71306623442165
oct225314412745
956673428004
1020052055525
11855a954117
123a77486971
131b77402818
14d831965a5
157c55eebba
hex4ab3215e5

20052055525 has 12 divisors (see below), whose sum is σ = 25471002564. Its totient is φ = 15650384000.

The previous prime is 20052055519. The next prime is 20052055549. The reversal of 20052055525 is 52555025002.

It can be written as a sum of positive squares in 6 ways, for example, as 167107329 + 19884948196 = 12927^2 + 141014^2 .

It is not a de Polignac number, because 20052055525 - 211 = 20052053477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9780466 + ... + 9782515.

It is an arithmetic number, because the mean of its divisors is an integer number (2122583547).

Almost surely, 220052055525 is an apocalyptic number.

20052055525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20052055525 is a deficient number, since it is larger than the sum of its proper divisors (5418947039).

20052055525 is a wasteful number, since it uses less digits than its factorization.

20052055525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563032 (or 19563027 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 31.

The spelling of 20052055525 in words is "twenty billion, fifty-two million, fifty-five thousand, five hundred twenty-five".

Divisors: 1 5 25 41 205 1025 19562981 97814905 489074525 802082221 4010411105 20052055525