65816257125 has 16 divisors (see below), whose sum is σ = 109518252480. Its totient is φ = 35102003600.

The previous prime is 65816257121. The next prime is 65816257147. The reversal of 65816257125 is 52175261856.

It is not a de Polignac number, because 65816257125 - 2² = 65816257121 is a prime.

It is a super-2 number, since 2×65816257125² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65816257121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 87754635 + ... + 87755384.

It is an arithmetic number, because the mean of its divisors is an integer number (6844890780).

Almost surely, 2^65816257125 is an apocalyptic number.

It is an amenable number.

65816257125 is a deficient number, since it is larger than the sum of its proper divisors (43701995355).

65816257125 is a wasteful number, since it uses less digits than its factorization.

65816257125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175510037 (or 175510027 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The spelling of 65816257125 in words is "sixty-five billion, eight hundred sixteen million, two hundred fifty-seven thousand, one hundred twenty-five".