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2222002225 = 52124971161
BaseRepresentation
bin1000010001110001…
…0001000000110001
312201212002102000201
42010130101000301
514022313032400
61004253115201
7106030464412
oct20434210061
95655072021
102222002225
11a40298183
12520188b01
13295466221
14171167809
15d011606a
hex84711031

2222002225 has 12 divisors (see below), whose sum is σ = 2757527500. Its totient is φ = 1776153600.

The previous prime is 2222002217. The next prime is 2222002241. The reversal of 2222002225 is 5222002222.

It can be written as a sum of positive squares in 6 ways, for example, as 14130081 + 2207872144 = 3759^2 + 46988^2 .

It is not a de Polignac number, because 2222002225 - 23 = 2222002217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4356 + ... + 66805.

Almost surely, 22222002225 is an apocalyptic number.

2222002225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2222002225 is a deficient number, since it is larger than the sum of its proper divisors (535525275).

2222002225 is a wasteful number, since it uses less digits than its factorization.

2222002225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72420 (or 72415 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2222002225 is about 47138.1185984337. The cubic root of 2222002225 is about 1304.9128159682.

Adding to 2222002225 its reverse (5222002222), we get a palindrome (7444004447).

The spelling of 2222002225 in words is "two billion, two hundred twenty-two million, two thousand, two hundred twenty-five".

Divisors: 1 5 25 1249 6245 31225 71161 355805 1779025 88880089 444400445 2222002225