53821680025 has 9 divisors (see below), whose sum is σ = 66740321631. Its totient is φ = 43056416040.

The previous prime is 53821680013. The next prime is 53821680047. The reversal of 53821680025 is 52008612835.

The square root of 53821680025 is 231995.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19375804809 + 34445875216 = 139197^2 + 185596^2 .

It is not a de Polignac number, because 53821680025 - 2¹⁷ = 53821548953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53821680025.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1136776 + ... + 1183174.

Almost surely, 2^53821680025 is an apocalyptic number.

53821680025 is the 231995-th square number.

53821680025 is the 115998-th centered octagonal number.

It is an amenable number.

53821680025 is a deficient number, since it is larger than the sum of its proper divisors (12918641606).

53821680025 is an frugal number, since it uses more digits than its factorization.

53821680025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92808 (or 46404 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 53821680025 in words is "fifty-three billion, eight hundred twenty-one million, six hundred eighty thousand, twenty-five".