25501201142321 has 2 divisors, whose sum is σ = 25501201142322. Its totient is φ = 25501201142320.

The previous prime is 25501201142317. The next prime is 25501201142387. The reversal of 25501201142321 is 12324110210552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24990640876096 + 510560266225 = 4999064^2 + 714535^2 .

It is a cyclic number.

It is not a de Polignac number, because 25501201142321 - 2² = 25501201142317 is a prime.

It is a super-2 number, since 2×25501201142321² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25501201142311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750600571160 + 12750600571161.

It is an arithmetic number, because the mean of its divisors is an integer number (12750600571161).

Almost surely, 2^{25501201142321} is an apocalyptic number.

It is an amenable number.

25501201142321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25501201142321 is an equidigital number, since it uses as much as digits as its factorization.

25501201142321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 25501201142321 its reverse (12324110210552), we get a palindrome (37825311352873).

The spelling of 25501201142321 in words is "twenty-five trillion, five hundred one billion, two hundred one million, one hundred forty-two thousand, three hundred twenty-one".