125246880865 has 4 divisors (see below), whose sum is σ = 150296257044. Its totient is φ = 100197504688.

The previous prime is 125246880823. The next prime is 125246880887. The reversal of 125246880865 is 568088642521.

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 93357135936 + 31889744929 = 305544^2 + 178577^2 .

It is a cyclic number.

It is not a de Polignac number, because 125246880865 - 2³⁵ = 90887142497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12524688082 + ... + 12524688091.

It is an arithmetic number, because the mean of its divisors is an integer number (37574064261).

Almost surely, 2^125246880865 is an apocalyptic number.

It is an amenable number.

125246880865 is a deficient number, since it is larger than the sum of its proper divisors (25049376179).

125246880865 is an equidigital number, since it uses as much as digits as its factorization.

125246880865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25049376178.

The product of its (nonzero) digits is 7372800, while the sum is 55.

The spelling of 125246880865 in words is "one hundred twenty-five billion, two hundred forty-six million, eight hundred eighty thousand, eight hundred sixty-five".