125444665 has 8 divisors (see below), whose sum is σ = 150683400. Its totient is φ = 100255872.

The previous prime is 125444659. The next prime is 125444677. The reversal of 125444665 is 566444521.

It can be written as a sum of positive squares in 4 ways, for example, as 41886784 + 83557881 = 6472^2 + 9141^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 125444665 - 2⁷ = 125444537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6714 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (18835425).

Almost surely, 2^125444665 is an apocalyptic number.

It is an amenable number.

125444665 is a deficient number, since it is larger than the sum of its proper divisors (25238735).

125444665 is a wasteful number, since it uses less digits than its factorization.

125444665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24971.

The product of its digits is 115200, while the sum is 37.

The square root of 125444665 is about 11200.2082569924. The cubic root of 125444665 is about 500.5921850236.

The spelling of 125444665 in words is "one hundred twenty-five million, four hundred forty-four thousand, six hundred sixty-five".