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20050005255 = 357190952431
BaseRepresentation
bin10010101011000100…
…101100110100000111
31220202022121210120020
4102223010230310013
5312030300132010
613113313110223
71306600142550
oct225304546407
956668553506
1020050005255
118559783785
123a76858373
131b76b65547
14d82bc1327
157c5347470
hex4ab12cd07

20050005255 has 16 divisors (see below), whose sum is σ = 36662866944. Its totient is φ = 9165716640.

The previous prime is 20050005233. The next prime is 20050005259. The reversal of 20050005255 is 55250005002.

It is not a de Polignac number, because 20050005255 - 217 = 20049874183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050005259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95476111 + ... + 95476320.

It is an arithmetic number, because the mean of its divisors is an integer number (2291429184).

Almost surely, 220050005255 is an apocalyptic number.

20050005255 is a deficient number, since it is larger than the sum of its proper divisors (16612861689).

20050005255 is a wasteful number, since it uses less digits than its factorization.

20050005255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190952446.

The product of its (nonzero) digits is 2500, while the sum is 24.

The spelling of 20050005255 in words is "twenty billion, fifty million, five thousand, two hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 105 190952431 572857293 954762155 1336667017 2864286465 4010001051 6683335085 20050005255