125578002085 has 4 divisors (see below), whose sum is σ = 150693602508. Its totient is φ = 100462401664.

The previous prime is 125578002071. The next prime is 125578002097. The reversal of 125578002085 is 580200875521.

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 56336921316 + 69241080769 = 237354^2 + 263137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125578002085 is a prime.

It is a Duffinian number.

It is a congruent 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, 12557800204 + ... + 12557800213.

It is an arithmetic number, because the mean of its divisors is an integer number (37673400627).

Almost surely, 2^125578002085 is an apocalyptic number.

It is an amenable number.

125578002085 is a deficient number, since it is larger than the sum of its proper divisors (25115600423).

125578002085 is an equidigital number, since it uses as much as digits as its factorization.

125578002085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25115600422.

The product of its (nonzero) digits is 224000, while the sum is 43.

The spelling of 125578002085 in words is "one hundred twenty-five billion, five hundred seventy-eight million, two thousand, eighty-five".