65708972125 has 16 divisors (see below), whose sum is σ = 84832553520. Its totient is φ = 50754513600.

The previous prime is 65708972083. The next prime is 65708972167. The reversal of 65708972125 is 52127980756.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65708972083) and next prime (65708972167).

It can be written as a sum of positive squares in 8 ways, for example, as 40345543044 + 25363429081 = 200862^2 + 159259^2 .

It is not a de Polignac number, because 65708972125 - 2⁷ = 65708971997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9059682 + ... + 9066931.

It is an arithmetic number, because the mean of its divisors is an integer number (5302034595).

Almost surely, 2^65708972125 is an apocalyptic number.

It is an amenable number.

65708972125 is a deficient number, since it is larger than the sum of its proper divisors (19123581395).

65708972125 is a wasteful number, since it uses less digits than its factorization.

65708972125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18126657 (or 18126647 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 65708972125 in words is "sixty-five billion, seven hundred eight million, nine hundred seventy-two thousand, one hundred twenty-five".