10525553981 has 2 divisors, whose sum is σ = 10525553982. Its totient is φ = 10525553980.

The previous prime is 10525553977. The next prime is 10525554023. The reversal of 10525553981 is 18935552501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9477996025 + 1047557956 = 97355^2 + 32366^2 .

It is a cyclic number.

It is not a de Polignac number, because 10525553981 - 2² = 10525553977 is a prime.

It is a super-2 number, since 2×10525553981² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10525553971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5262776990 + 5262776991.

It is an arithmetic number, because the mean of its divisors is an integer number (5262776991).

Almost surely, 2^10525553981 is an apocalyptic number.

It is an amenable number.

10525553981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10525553981 is an equidigital number, since it uses as much as digits as its factorization.

10525553981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270000, while the sum is 44.

The spelling of 10525553981 in words is "ten billion, five hundred twenty-five million, five hundred fifty-three thousand, nine hundred eighty-one".