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1230453225 = 32528216661
BaseRepresentation
bin100100101010111…
…0011100111101001
310011202022111111200
41021111303213221
510004444000400
6322032514413
742330452121
oct11125634751
93152274450
101230453225
115816167a1
122a40aba09
13167bc7841
14b95b9c81
1573053b00
hex495739e9

1230453225 has 36 divisors (see below), whose sum is σ = 2206894092. Its totient is φ = 655344000.

The previous prime is 1230453223. The next prime is 1230453227. The reversal of 1230453225 is 5223540321.

It is a happy number.

1230453225 is a `hidden beast` number, since 123 + 0 + 4 + 532 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1230453223) and next prime (1230453227).

It can be written as a sum of positive squares in 6 ways, for example, as 127449 + 1230325776 = 357^2 + 35076^2 .

It is not a de Polignac number, because 1230453225 - 21 = 1230453223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230453223) 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 35 ways as a sum of consecutive naturals, for example, 181395 + ... + 188055.

Almost surely, 21230453225 is an apocalyptic number.

1230453225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1230453225 is a deficient number, since it is larger than the sum of its proper divisors (976440867).

1230453225 is a wasteful number, since it uses less digits than its factorization.

1230453225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498 (or 7490 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1230453225 is about 35077.8167079994. The cubic root of 1230453225 is about 1071.5728535220.

Adding to 1230453225 its reverse (5223540321), we get a palindrome (6453993546).

The spelling of 1230453225 in words is "one billion, two hundred thirty million, four hundred fifty-three thousand, two hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 821 2463 4105 6661 7389 12315 19983 20525 33305 36945 59949 61575 99915 166525 184725 299745 499575 1498725 5468681 16406043 27343405 49218129 82030215 136717025 246090645 410151075 1230453225