65725640000 has 70 divisors (see below), whose sum is σ = 162978325554. Its totient is φ = 26290240000.

The previous prime is 65725639999. The next prime is 65725640063. The reversal of 65725640000 is 4652756.

65725640000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 47985531136 + 17740108864 = 219056^2 + 133192^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 781571 + ... + 861570.

Almost surely, 2^65725640000 is an apocalyptic number.

It is an amenable number.

65725640000 is an abundant number, since it is smaller than the sum of its proper divisors (97252685554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65725640000 is an equidigital number, since it uses as much as digits as its factorization.

65725640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643173 (or 1643148 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 65725640000 in words is "sixty-five billion, seven hundred twenty-five million, six hundred forty thousand".