125648065 has 8 divisors (see below), whose sum is σ = 151032168. Its totient is φ = 100348800.

The previous prime is 125648063. The next prime is 125648087. The reversal of 125648065 is 560846521.

It can be written as a sum of positive squares in 4 ways, for example, as 10042561 + 115605504 = 3169^2 + 10752^2 .

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

It is not a de Polignac number, because 125648065 - 2¹ = 125648063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125648063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17902 + ... + 23911.

It is an arithmetic number, because the mean of its divisors is an integer number (18879021).

Almost surely, 2^125648065 is an apocalyptic number.

It is an amenable number.

125648065 is a deficient number, since it is larger than the sum of its proper divisors (25384103).

125648065 is an equidigital number, since it uses as much as digits as its factorization.

125648065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42419.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 125648065 is about 11209.2847675487. The cubic root of 125648065 is about 500.8625976614.

The spelling of 125648065 in words is "one hundred twenty-five million, six hundred forty-eight thousand, sixty-five".