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1230104025 = 32523125689
BaseRepresentation
bin100100101010001…
…1110010111011001
310011201122202111100
41021110132113121
510004401312100
6322021222013
742324466053
oct11124362731
93151582440
101230104025
115813a83a7
122a3b61909
13167b04907
14b95288d3
1572ed5400
hex4951e5d9

1230104025 has 54 divisors (see below), whose sum is σ = 2277018510. Its totient is φ = 634780800.

The previous prime is 1230104021. The next prime is 1230104027. The reversal of 1230104025 is 5204010321.

It can be written as a sum of positive squares in 3 ways, for example, as 322166601 + 907937424 = 17949^2 + 30132^2 .

It is not a de Polignac number, because 1230104025 - 22 = 1230104021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230103989 and 1230104007.

It is not an unprimeable number, because it can be changed into a prime (1230104021) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 213381 + ... + 219069.

Almost surely, 21230104025 is an apocalyptic number.

1230104025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1230104025 is a deficient number, since it is larger than the sum of its proper divisors (1046914485).

1230104025 is a wasteful number, since it uses less digits than its factorization.

1230104025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767 (or 5728 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1230104025 is about 35072.8388500275. The cubic root of 1230104025 is about 1071.4714739011.

Adding to 1230104025 its reverse (5204010321), we get a palindrome (6434114346).

The spelling of 1230104025 in words is "one billion, two hundred thirty million, one hundred four thousand, twenty-five".

Divisors: 1 3 5 9 15 25 31 45 75 93 155 225 279 465 775 961 1395 2325 2883 4805 5689 6975 8649 14415 17067 24025 28445 43245 51201 72075 85335 142225 176359 216225 256005 426675 529077 881795 1280025 1587231 2645385 4408975 5467129 7936155 13226925 16401387 27335645 39680775 49204161 82006935 136678225 246020805 410034675 1230104025