125430565 has 16 divisors (see below), whose sum is σ = 163538928. Its totient is φ = 91800576.

The previous prime is 125430559. The next prime is 125430581. The reversal of 125430565 is 565034521.

It can be written as a sum of positive squares in 8 ways, for example, as 43020481 + 82410084 = 6559^2 + 9078^2 .

It is a cyclic number.

It is not a de Polignac number, because 125430565 - 2¹¹ = 125428517 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1194 + ... + 15883.

It is an arithmetic number, because the mean of its divisors is an integer number (10221183).

Almost surely, 2^125430565 is an apocalyptic number.

It is an amenable number.

125430565 is a deficient number, since it is larger than the sum of its proper divisors (38108363).

125430565 is a wasteful number, since it uses less digits than its factorization.

125430565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 125430565 is about 11199.5787867223. The cubic root of 125430565 is about 500.5734287741.

The spelling of 125430565 in words is "one hundred twenty-five million, four hundred thirty thousand, five hundred sixty-five".