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2112443025 = 352711365791
BaseRepresentation
bin111110111101001…
…0101001010010001
312110012221020001120
41331322111022101
513311241134100
6545340552453
7103230320010
oct17572251221
95405836046
102112443025
11994467790
124ab552729
132788566b4
141607a8a77
15c56c40a0
hex7de95291

2112443025 has 48 divisors (see below), whose sum is σ = 4354387968. Its totient is φ = 877896000.

The previous prime is 2112443023. The next prime is 2112443033. The reversal of 2112443025 is 5203442112.

It is not a de Polignac number, because 2112443025 - 21 = 2112443023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112442986 and 2112443004.

It is not an unprimeable number, because it can be changed into a prime (2112443023) 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 47 ways as a sum of consecutive naturals, for example, 177121 + ... + 188670.

It is an arithmetic number, because the mean of its divisors is an integer number (90716416).

Almost surely, 22112443025 is an apocalyptic number.

2112443025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2112443025 is an abundant number, since it is smaller than the sum of its proper divisors (2241944943).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112443025 is a wasteful number, since it uses less digits than its factorization.

2112443025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365822 (or 365817 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2112443025 is about 45961.3209666563. The cubic root of 2112443025 is about 1283.1034364521.

Adding to 2112443025 its reverse (5203442112), we get a palindrome (7315885137).

The spelling of 2112443025 in words is "two billion, one hundred twelve million, four hundred forty-three thousand, twenty-five".

Divisors: 1 3 5 7 11 15 21 25 33 35 55 75 77 105 165 175 231 275 385 525 825 1155 1925 5775 365791 1097373 1828955 2560537 4023701 5486865 7681611 9144775 12071103 12802685 20118505 27434325 28165907 38408055 60355515 64013425 84497721 100592525 140829535 192040275 301777575 422488605 704147675 2112443025