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259925243 = 1991306157
BaseRepresentation
bin11110111111000…
…10010011111011
3200010002120101212
433133202103323
51013020101433
641443033335
76304220354
oct1737422373
9603076355
10259925243
111237a2756
127306b84b
1341b09226
1426740d2b
1517c44d48
hexf7e24fb

259925243 has 4 divisors (see below), whose sum is σ = 261231600. Its totient is φ = 258618888.

The previous prime is 259925233. The next prime is 259925251. The reversal of 259925243 is 342529952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-259925243 is a prime.

It is a super-2 number, since 2×2599252432 = 135122263897218098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 259925243.

It is not an unprimeable number, because it can be changed into a prime (259925213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652880 + ... + 653277.

It is an arithmetic number, because the mean of its divisors is an integer number (65307900).

Almost surely, 2259925243 is an apocalyptic number.

259925243 is a deficient number, since it is larger than the sum of its proper divisors (1306357).

259925243 is a wasteful number, since it uses less digits than its factorization.

259925243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306356.

The product of its digits is 194400, while the sum is 41.

The square root of 259925243 is about 16122.1972137795. The cubic root of 259925243 is about 638.1892526282.

The spelling of 259925243 in words is "two hundred fifty-nine million, nine hundred twenty-five thousand, two hundred forty-three".

Divisors: 1 199 1306157 259925243