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80285380425 = 3252356823913
BaseRepresentation
bin100101011000101100…
…0011010111101001001
321200020020002220100100
41022301120122331021
52303411024133200
6100514350200013
75541355321335
oct1126130327511
9250206086310
1080285380425
113105a005678
12136874b3009
1377562b4483
143c58a247c5
15214d590d00
hex12b161af49

80285380425 has 18 divisors (see below), whose sum is σ = 143800037342. Its totient is φ = 42818869440.

The previous prime is 80285380423. The next prime is 80285380471. The reversal of 80285380425 is 52408358208.

80285380425 is a `hidden beast` number, since 80 + 28 + 53 + 80 + 425 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 681836544 + 79603543881 = 26112^2 + 282141^2 .

It is not a de Polignac number, because 80285380425 - 21 = 80285380423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80285380421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 178411732 + ... + 178412181.

Almost surely, 280285380425 is an apocalyptic number.

It is an amenable number.

80285380425 is a deficient number, since it is larger than the sum of its proper divisors (63514656917).

80285380425 is a wasteful number, since it uses less digits than its factorization.

80285380425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356823929 (or 356823921 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 80285380425 in words is "eighty billion, two hundred eighty-five million, three hundred eighty thousand, four hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 356823913 1070471739 1784119565 3211415217 5352358695 8920597825 16057076085 26761793475 80285380425