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80318925 = 3352257463
BaseRepresentation
bin1001100100110…
…01000111001101
312121010121212000
410302121013031
5131030201200
611545302513
71663461651
oct462310715
9177117760
1080318925
1141379885
1222a94a39
13138425bb
14a94aa61
1570b8300
hex4c991cd

80318925 has 48 divisors (see below), whose sum is σ = 148442880. Its totient is φ = 42577920.

The previous prime is 80318881. The next prime is 80318941. The reversal of 80318925 is 52981308.

It is not a de Polignac number, because 80318925 - 28 = 80318669 is a prime.

It is a super-2 number, since 2×803189252 = 12902259426311250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80318925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173244 + ... + 173706.

It is an arithmetic number, because the mean of its divisors is an integer number (3092560).

Almost surely, 280318925 is an apocalyptic number.

It is an amenable number.

80318925 is a deficient number, since it is larger than the sum of its proper divisors (68123955).

80318925 is a wasteful number, since it uses less digits than its factorization.

80318925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 80318925 is about 8962.0826262649. The cubic root of 80318925 is about 431.4587647069.

The spelling of 80318925 in words is "eighty million, three hundred eighteen thousand, nine hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 135 225 257 463 675 771 1285 1389 2313 2315 3855 4167 6425 6939 6945 11565 11575 12501 19275 20835 34695 34725 57825 62505 104175 118991 173475 312525 356973 594955 1070919 1784865 2974775 3212757 5354595 8924325 16063785 26772975 80318925