20325387265 has 4 divisors (see below), whose sum is σ = 24390464724. Its totient is φ = 16260309808.

The previous prime is 20325387233. The next prime is 20325387281. The reversal of 20325387265 is 56278352302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14974172161 + 5351215104 = 122369^2 + 73152^2 .

It is a cyclic number.

It is not a de Polignac number, because 20325387265 - 2⁵ = 20325387233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032538722 + ... + 2032538731.

It is an arithmetic number, because the mean of its divisors is an integer number (6097616181).

Almost surely, 2^20325387265 is an apocalyptic number.

It is an amenable number.

20325387265 is a deficient number, since it is larger than the sum of its proper divisors (4065077459).

20325387265 is an equidigital number, since it uses as much as digits as its factorization.

20325387265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065077458.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 20325387265 in words is "twenty billion, three hundred twenty-five million, three hundred eighty-seven thousand, two hundred sixty-five".