20252772201601 has 4 divisors (see below), whose sum is σ = 20296704462804. Its totient is φ = 20208839940400.

The previous prime is 20252772201587. The next prime is 20252772201619. The reversal of 20252772201601 is 10610227725202.

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 6110170959376 + 14142601242225 = 2471876^2 + 3760665^2 .

It is a cyclic number.

It is not a de Polignac number, because 20252772201601 - 2²⁷ = 20252637983873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20252772201631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21966129910 + ... + 21966130831.

It is an arithmetic number, because the mean of its divisors is an integer number (5074176115701).

Almost surely, 2^{20252772201601} is an apocalyptic number.

It is an amenable number.

20252772201601 is a deficient number, since it is larger than the sum of its proper divisors (43932261203).

20252772201601 is an equidigital number, since it uses as much as digits as its factorization.

20252772201601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43932261202.

The product of its (nonzero) digits is 47040, while the sum is 37.

Adding to 20252772201601 its reverse (10610227725202), we get a palindrome (30862999926803).

The spelling of 20252772201601 in words is "twenty trillion, two hundred fifty-two billion, seven hundred seventy-two million, two hundred one thousand, six hundred one".