125025665 has 4 divisors (see below), whose sum is σ = 150030804. Its totient is φ = 100020528.

The previous prime is 125025629. The next prime is 125025671. The reversal of 125025665 is 566520521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62362609 + 62663056 = 7897^2 + 7916^2 .

It is a cyclic number.

It is not a de Polignac number, because 125025665 - 2⁶ = 125025601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12502562 + ... + 12502571.

It is an arithmetic number, because the mean of its divisors is an integer number (37507701).

Almost surely, 2^125025665 is an apocalyptic number.

It is an amenable number.

125025665 is a deficient number, since it is larger than the sum of its proper divisors (25005139).

125025665 is an equidigital number, since it uses as much as digits as its factorization.

125025665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25005138.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 125025665 is about 11181.4876022826. The cubic root of 125025665 is about 500.0342176583.

The spelling of 125025665 in words is "one hundred twenty-five million, twenty-five thousand, six hundred sixty-five".