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68261725 = 527390067
BaseRepresentation
bin1000001000110…
…01011101011101
311202110001111001
410010121131131
5114433333400
610435030301
71456133530
oct404313535
9152401431
1068261725
1135594054
121aa3b391
13111b056c
1490cca17
155ed5a6a
hex411975d

68261725 has 12 divisors (see below), whose sum is σ = 96736864. Its totient is φ = 46807920.

The previous prime is 68261693. The next prime is 68261729. The reversal of 68261725 is 52716286.

It is a happy number.

It is not a de Polignac number, because 68261725 - 25 = 68261693 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68261729) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 194859 + ... + 195208.

Almost surely, 268261725 is an apocalyptic number.

It is an amenable number.

68261725 is a deficient number, since it is larger than the sum of its proper divisors (28475139).

68261725 is a wasteful number, since it uses less digits than its factorization.

68261725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390084 (or 390079 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 68261725 is about 8262.0654197362. The cubic root of 68261725 is about 408.6885021277.

It can be divided in two parts, 68261 and 725, that added together give a palindrome (68986).

The spelling of 68261725 in words is "sixty-eight million, two hundred sixty-one thousand, seven hundred twenty-five".

Divisors: 1 5 7 25 35 175 390067 1950335 2730469 9751675 13652345 68261725