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8725681013 = 75521225779
BaseRepresentation
bin10000010000001011…
…10101001101110101
3211112002220112002212
420020011311031311
5120332233243023
64001501343205
7426142031150
oct101005651565
924462815085
108725681013
113778468325
121836267b05
13a909a467a
145cac08c97
15361091e78
hex208175375

8725681013 has 8 divisors (see below), whose sum is σ = 9974057280. Its totient is φ = 7477767360.

The previous prime is 8725681007. The next prime is 8725681039. The reversal of 8725681013 is 3101865278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8725681013 - 28 = 8725680757 is a prime.

It is a super-2 number, since 2×87256810132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725681813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74243 + ... + 151536.

It is an arithmetic number, because the mean of its divisors is an integer number (1246757160).

Almost surely, 28725681013 is an apocalyptic number.

It is an amenable number.

8725681013 is a deficient number, since it is larger than the sum of its proper divisors (1248376267).

8725681013 is a wasteful number, since it uses less digits than its factorization.

8725681013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231307.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 8725681013 is about 93411.3537692287. The cubic root of 8725681013 is about 2058.7318217153.

The spelling of 8725681013 in words is "eight billion, seven hundred twenty-five million, six hundred eighty-one thousand, thirteen".

Divisors: 1 7 5521 38647 225779 1580453 1246525859 8725681013