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1212202325 = 52371310489
BaseRepresentation
bin100100001000000…
…1011110101010101
310010110222020222102
41020100023311111
54440310433300
6320141411445
742016356365
oct11020136525
93113866872
101212202325
11572290604
12299b69b85
131641a75a9
14b6dc89a5
157164b0d5
hex4840bd55

1212202325 has 12 divisors (see below), whose sum is σ = 1543757220. Its totient is φ = 943551360.

The previous prime is 1212202297. The next prime is 1212202361. The reversal of 1212202325 is 5232022121.

It can be written as a sum of positive squares in 6 ways, for example, as 46799281 + 1165403044 = 6841^2 + 34138^2 .

It is not a de Polignac number, because 1212202325 - 210 = 1212201301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212202297 and 1212202306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 654320 + ... + 656169.

It is an arithmetic number, because the mean of its divisors is an integer number (128646435).

Almost surely, 21212202325 is an apocalyptic number.

It is an amenable number.

1212202325 is a deficient number, since it is larger than the sum of its proper divisors (331554895).

1212202325 is a wasteful number, since it uses less digits than its factorization.

1212202325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310536 (or 1310531 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1212202325 is about 34816.6960666862. The cubic root of 1212202325 is about 1066.2483469805.

Adding to 1212202325 its reverse (5232022121), we get a palindrome (6444224446).

The spelling of 1212202325 in words is "one billion, two hundred twelve million, two hundred two thousand, three hundred twenty-five".

Divisors: 1 5 25 37 185 925 1310489 6552445 32762225 48488093 242440465 1212202325