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75801825 = 3452114183
BaseRepresentation
bin1001000010010…
…10010011100001
312021122010120000
410201022103201
5123401124300
611304410213
71610206401
oct441122341
9167563500
1075801825
1139874040
1221476969
1312920568
14a0d2801
1569c4c00
hex484a4e1

75801825 has 120 divisors (see below), whose sum is σ = 158802336. Its totient is φ = 35424000.

The previous prime is 75801823. The next prime is 75801829. The reversal of 75801825 is 52810857.

It is not a de Polignac number, because 75801825 - 21 = 75801823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75801825.

It is not an unprimeable number, because it can be changed into a prime (75801821) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 913234 + ... + 913316.

Almost surely, 275801825 is an apocalyptic number.

75801825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75801825 is an abundant number, since it is smaller than the sum of its proper divisors (83000511).

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

75801825 is a wasteful number, since it uses less digits than its factorization.

75801825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 75801825 is about 8706.4243521666. The cubic root of 75801825 is about 423.2138649937.

The spelling of 75801825 in words is "seventy-five million, eight hundred one thousand, eight hundred twenty-five".

Divisors: 1 3 5 9 11 15 25 27 33 41 45 55 75 81 83 99 123 135 165 205 225 249 275 297 369 405 415 451 495 615 675 747 825 891 913 1025 1107 1245 1353 1485 1845 2025 2075 2241 2255 2475 2739 3075 3321 3403 3735 4059 4455 4565 5535 6225 6723 6765 7425 8217 9225 10209 11205 11275 12177 13695 16605 17015 18675 20295 22275 22825 24651 27675 30627 33615 33825 36531 37433 41085 51045 56025 60885 68475 73953 83025 85075 91881 101475 112299 123255 153135 168075 182655 187165 205425 255225 275643 304425 336897 369765 459405 561495 616275 765675 913275 935825 1010691 1378215 1684485 1848825 2297025 2807475 3032073 5053455 6891075 8422425 15160365 25267275 75801825