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275243443925 = 5212179046621
BaseRepresentation
bin1000000000101011100…
…10011010011011010101
3222022110012002200012212
410000111302122123111
514002144310201200
6330240050123205
725612534446122
oct4002562323325
9868405080185
10275243443925
11a68038262aa
1245416580505
131cc55b80968
14d471249749
15725e078035
hex4015c9a6d5

275243443925 has 12 divisors (see below), whose sum is σ = 341582353476. Its totient is φ = 220013798400.

The previous prime is 275243443919. The next prime is 275243443927. The reversal of 275243443925 is 529344342572.

It can be written as a sum of positive squares in 6 ways, for example, as 10510555441 + 264732888484 = 102521^2 + 514522^2 .

It is not a de Polignac number, because 275243443925 - 26 = 275243443861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275243443927) 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 11 ways as a sum of consecutive naturals, for example, 4492886 + ... + 4553735.

It is an arithmetic number, because the mean of its divisors is an integer number (28465196123).

Almost surely, 2275243443925 is an apocalyptic number.

275243443925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

275243443925 is a deficient number, since it is larger than the sum of its proper divisors (66338909551).

275243443925 is a wasteful number, since it uses less digits than its factorization.

275243443925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9047848 (or 9047843 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 50.

The spelling of 275243443925 in words is "two hundred seventy-five billion, two hundred forty-three million, four hundred forty-three thousand, nine hundred twenty-five".

Divisors: 1 5 25 1217 6085 30425 9046621 45233105 226165525 11009737757 55048688785 275243443925