125306665 has 8 divisors (see below), whose sum is σ = 164037888. Its totient is φ = 91132080.

The previous prime is 125306663. The next prime is 125306669. The reversal of 125306665 is 566603521.

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

It is not a de Polignac number, because 125306665 - 2¹ = 125306663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125306665.

It is not an unprimeable number, because it can be changed into a prime (125306663) 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 7 ways as a sum of consecutive naturals, for example, 1139097 + ... + 1139206.

It is an arithmetic number, because the mean of its divisors is an integer number (20504736).

Almost surely, 2^125306665 is an apocalyptic number.

It is an amenable number.

125306665 is a deficient number, since it is larger than the sum of its proper divisors (38731223).

125306665 is a wasteful number, since it uses less digits than its factorization.

125306665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278319.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 125306665 is about 11194.0459620282. The cubic root of 125306665 is about 500.4085527451.

The spelling of 125306665 in words is "one hundred twenty-five million, three hundred six thousand, six hundred sixty-five".