125445565 has 16 divisors (see below), whose sum is σ = 179520768. Its totient is φ = 82279296.

The previous prime is 125445521. The next prime is 125445571. The reversal of 125445565 is 565544521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125445565 is a prime.

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, 77112 + ... + 78721.

It is an arithmetic number, because the mean of its divisors is an integer number (11220048).

Almost surely, 2^125445565 is an apocalyptic number.

It is an amenable number.

125445565 is a deficient number, since it is larger than the sum of its proper divisors (54075203).

125445565 is a wasteful number, since it uses less digits than its factorization.

125445565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155868.

The product of its digits is 120000, while the sum is 37.

The square root of 125445565 is about 11200.2484347447. The cubic root of 125445565 is about 500.5933821833.

The spelling of 125445565 in words is "one hundred twenty-five million, four hundred forty-five thousand, five hundred sixty-five".