10725020521 has 2 divisors, whose sum is σ = 10725020522. Its totient is φ = 10725020520.

The previous prime is 10725020513. The next prime is 10725020533. The reversal of 10725020521 is 12502052701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10724673600 + 346921 = 103560^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 10725020521 - 2³ = 10725020513 is a prime.

It is a super-2 number, since 2×10725020521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10725020591) 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, 5362510260 + 5362510261.

It is an arithmetic number, because the mean of its divisors is an integer number (5362510261).

Almost surely, 2^10725020521 is an apocalyptic number.

It is an amenable number.

10725020521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10725020521 is an equidigital number, since it uses as much as digits as its factorization.

10725020521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 25.

The spelling of 10725020521 in words is "ten billion, seven hundred twenty-five million, twenty thousand, five hundred twenty-one".