10256274521 has 2 divisors, whose sum is σ = 10256274522. Its totient is φ = 10256274520.

The previous prime is 10256274487. The next prime is 10256274547. The reversal of 10256274521 is 12547265201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7505796496 + 2750478025 = 86636^2 + 52445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10256274521 - 2¹⁴ = 10256258137 is a prime.

It is a super-2 number, since 2×10256274521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10256274571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5128137260 + 5128137261.

It is an arithmetic number, because the mean of its divisors is an integer number (5128137261).

Almost surely, 2^10256274521 is an apocalyptic number.

It is an amenable number.

10256274521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10256274521 is an equidigital number, since it uses as much as digits as its factorization.

10256274521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 10256274521 in words is "ten billion, two hundred fifty-six million, two hundred seventy-four thousand, five hundred twenty-one".