20041251001 has 2 divisors, whose sum is σ = 20041251002. Its totient is φ = 20041251000.

The previous prime is 20041250953. The next prime is 20041251007. The reversal of 20041251001 is 10015214002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11507925625 + 8533325376 = 107275^2 + 92376^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041251001 - 2¹⁵ = 20041218233 is a prime.

It is not a weakly prime, because it can be changed into another prime (20041251007) by changing a digit.

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 as a sum of consecutive naturals, namely, 10020625500 + 10020625501.

It is an arithmetic number, because the mean of its divisors is an integer number (10020625501).

Almost surely, 2^20041251001 is an apocalyptic number.

It is an amenable number.

20041251001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041251001 is an equidigital number, since it uses as much as digits as its factorization.

20041251001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20041251001 its reverse (10015214002), we get a palindrome (30056465003).

The spelling of 20041251001 in words is "twenty billion, forty-one million, two hundred fifty-one thousand, one".