36728515625 has 22 divisors (see below), whose sum is σ = 45922850622. Its totient is φ = 29375000000.

The previous prime is 36728515561. The next prime is 36728515643. The reversal of 36728515625 is 52651582763.

It can be written as a sum of positive squares in 11 ways, for example, as 4176778384 + 32551737241 = 64628^2 + 180421^2 .

It is not a de Polignac number, because 36728515625 - 2⁶ = 36728515561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 9763745 + ... + 9767505.

It is an arithmetic number, because the mean of its divisors is an integer number (2087402301).

Almost surely, 2^36728515625 is an apocalyptic number.

It is an amenable number.

36728515625 is a deficient number, since it is larger than the sum of its proper divisors (9194334997).

36728515625 is an frugal number, since it uses more digits than its factorization.

36728515625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811 (or 3766 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 50.

The spelling of 36728515625 in words is "thirty-six billion, seven hundred twenty-eight million, five hundred fifteen thousand, six hundred twenty-five".