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2173143025 = 52178948589
BaseRepresentation
bin1000000110000111…
…1000011111110001
312121110011002210201
42001201320133301
513422311034100
6555345555201
7104565260644
oct20141703761
95543132721
102173143025
11a15756579
12507945b01
132882ba161
14168889a5b
15cabb436a
hex818787f1

2173143025 has 12 divisors (see below), whose sum is σ = 2696259100. Its totient is φ = 1737506880.

The previous prime is 2173143023. The next prime is 2173143053. The reversal of 2173143025 is 5203413712.

It can be written as a sum of positive squares in 6 ways, for example, as 99980001 + 2073163024 = 9999^2 + 45532^2 .

It is not a de Polignac number, because 2173143025 - 21 = 2173143023 is a prime.

It is a super-3 number, since 3×21731430253 (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2173142984 and 2173143002.

It is not an unprimeable number, because it can be changed into a prime (2173143023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20431 + ... + 69019.

Almost surely, 22173143025 is an apocalyptic number.

2173143025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2173143025 is a deficient number, since it is larger than the sum of its proper divisors (523116075).

2173143025 is a wasteful number, since it uses less digits than its factorization.

2173143025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50388 (or 50383 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2173143025 is about 46616.9821524302. The cubic root of 2173143025 is about 1295.2773465194.

Adding to 2173143025 its reverse (5203413712), we get a palindrome (7376556737).

The spelling of 2173143025 in words is "two billion, one hundred seventy-three million, one hundred forty-three thousand, twenty-five".

Divisors: 1 5 25 1789 8945 44725 48589 242945 1214725 86925721 434628605 2173143025