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2002111225 = 52194214971
BaseRepresentation
bin111011101010101…
…1100101011111001
312011112022210021121
41313111130223321
513100020024400
6530400105241
7100420443652
oct16725345371
95145283247
102002111225
11938159884
1247a605221
1325ba362ca
1414dc88529
15bab7d21a
hex7755caf9

2002111225 has 12 divisors (see below), whose sum is σ = 2613282640. Its totient is φ = 1517389200.

The previous prime is 2002111211. The next prime is 2002111229. The reversal of 2002111225 is 5221112002.

It is a happy number.

It is not a de Polignac number, because 2002111225 - 29 = 2002110713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002111199 and 2002111208.

It is not an unprimeable number, because it can be changed into a prime (2002111229) 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, 2107011 + ... + 2107960.

Almost surely, 22002111225 is an apocalyptic number.

2002111225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2002111225 is a deficient number, since it is larger than the sum of its proper divisors (611171415).

2002111225 is a wasteful number, since it uses less digits than its factorization.

2002111225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215000 (or 4214995 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2002111225 is about 44744.9575371348. The cubic root of 2002111225 is about 1260.3642234613.

Adding to 2002111225 its reverse (5221112002), we get a palindrome (7223223227).

The spelling of 2002111225 in words is "two billion, two million, one hundred eleven thousand, two hundred twenty-five".

Divisors: 1 5 19 25 95 475 4214971 21074855 80084449 105374275 400422245 2002111225