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1230202025 = 5213171911719
BaseRepresentation
bin100100101010011…
…0110010010101001
310011201211201220222
41021110312102221
510004412431100
6322023255425
742325354553
oct11124662251
93151751828
101230202025
11581464a98
122a3baa575
13167b3a3c0
14b95524d3
1573004485
hex495364a9

1230202025 has 48 divisors (see below), whose sum is σ = 1831132800. Its totient is φ = 809948160.

The previous prime is 1230202009. The next prime is 1230202031. The reversal of 1230202025 is 5202020321.

It is not a de Polignac number, because 1230202025 - 24 = 1230202009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 1230201994 and 1230202012.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99116 + ... + 110834.

It is an arithmetic number, because the mean of its divisors is an integer number (38148600).

Almost surely, 21230202025 is an apocalyptic number.

It is an amenable number.

1230202025 is a deficient number, since it is larger than the sum of its proper divisors (600930775).

1230202025 is a wasteful number, since it uses less digits than its factorization.

1230202025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778 (or 11773 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1230202025 is about 35074.2359146996. The cubic root of 1230202025 is about 1071.4999271630.

Adding to 1230202025 its reverse (5202020321), we get a palindrome (6432222346).

The spelling of 1230202025 in words is "one billion, two hundred thirty million, two hundred two thousand, twenty-five".

Divisors: 1 5 13 17 19 25 65 85 95 221 247 323 325 425 475 1105 1235 1615 4199 5525 6175 8075 11719 20995 58595 104975 152347 199223 222661 292975 761735 996115 1113305 2589899 2894593 3785237 3808675 4980575 5566525 12949495 14472965 18926185 49208081 64747475 72364825 94630925 246040405 1230202025