20025441452321 has 4 divisors (see below), whose sum is σ = 20026945667652. Its totient is φ = 20023937236992.

The previous prime is 20025441452309. The next prime is 20025441452327. The reversal of 20025441452321 is 12325414452002.

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 9314948161600 + 10710493290721 = 3052040^2 + 3272689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20025441452321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20025441452327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752087696 + ... + 752114321.

It is an arithmetic number, because the mean of its divisors is an integer number (5006736416913).

Almost surely, 2^{20025441452321} is an apocalyptic number.

It is an amenable number.

20025441452321 is a deficient number, since it is larger than the sum of its proper divisors (1504215331).

20025441452321 is a wasteful number, since it uses less digits than its factorization.

20025441452321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504215330.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 20025441452321 in words is "twenty trillion, twenty-five billion, four hundred forty-one million, four hundred fifty-two thousand, three hundred twenty-one".