10251112551521 has 2 divisors, whose sum is σ = 10251112551522. Its totient is φ = 10251112551520.

The previous prime is 10251112551517. The next prime is 10251112551553. The reversal of 10251112551521 is 12515521115201.

It is an a-pointer prime, because the next prime (10251112551553) can be obtained adding 10251112551521 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6637007385121 + 3614105166400 = 2576239^2 + 1901080^2 .

It is a cyclic number.

It is not a de Polignac number, because 10251112551521 - 2² = 10251112551517 is a prime.

It is not a weakly prime, because it can be changed into another prime (10251114551521) 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, 5125556275760 + 5125556275761.

It is an arithmetic number, because the mean of its divisors is an integer number (5125556275761).

Almost surely, 2^{10251112551521} is an apocalyptic number.

It is an amenable number.

10251112551521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10251112551521 is an equidigital number, since it uses as much as digits as its factorization.

10251112551521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000, while the sum is 32.

Adding to 10251112551521 its reverse (12515521115201), we get a palindrome (22766633666722).

The spelling of 10251112551521 in words is "ten trillion, two hundred fifty-one billion, one hundred twelve million, five hundred fifty-one thousand, five hundred twenty-one".