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2143345225 = 52719762171
BaseRepresentation
bin111111111000000…
…1101101001001001
312112101002012220111
41333300031221021
513342144021400
6552403154321
7104054063620
oct17760155111
95471065814
102143345225
119aa953a9a
124b99759a1
13282086218
141649306b7
15c827a3ba
hex7fc0da49

2143345225 has 24 divisors (see below), whose sum is σ = 3052893888. Its totient is φ = 1462238400.

The previous prime is 2143345223. The next prime is 2143345249. The reversal of 2143345225 is 5225433412.

It is not a de Polignac number, because 2143345225 - 21 = 2143345223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143345223) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3390 + ... + 65560.

It is an arithmetic number, because the mean of its divisors is an integer number (127203912).

Almost surely, 22143345225 is an apocalyptic number.

2143345225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143345225 is a deficient number, since it is larger than the sum of its proper divisors (909548663).

2143345225 is a wasteful number, since it uses less digits than its factorization.

2143345225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62385 (or 62380 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 2143345225 is about 46296.2765781439. The cubic root of 2143345225 is about 1289.3298654649.

Adding to 2143345225 its reverse (5225433412), we get a palindrome (7368778637).

The spelling of 2143345225 in words is "two billion, one hundred forty-three million, three hundred forty-five thousand, two hundred twenty-five".

Divisors: 1 5 7 25 35 175 197 985 1379 4925 6895 34475 62171 310855 435197 1554275 2175985 10879925 12247687 61238435 85733809 306192175 428669045 2143345225