866426725 has 6 divisors (see below), whose sum is σ = 1074369170. Its totient is φ = 693141360.

The previous prime is 866426723. The next prime is 866426747. The reversal of 866426725 is 527624668.

It can be written as a sum of positive squares in 3 ways, for example, as 772641 + 865654084 = 879^2 + 29422^2 .

It is not a de Polignac number, because 866426725 - 2¹ = 866426723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866426723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17328510 + ... + 17328559.

Almost surely, 2^866426725 is an apocalyptic number.

It is an amenable number.

866426725 is a deficient number, since it is larger than the sum of its proper divisors (207942445).

866426725 is a wasteful number, since it uses less digits than its factorization.

866426725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34657079 (or 34657074 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 866426725 is about 29435.1273990788. The cubic root of 866426725 is about 953.3315073101.

The spelling of 866426725 in words is "eight hundred sixty-six million, four hundred twenty-six thousand, seven hundred twenty-five".