41021015625521 has 2 divisors, whose sum is σ = 41021015625522. Its totient is φ = 41021015625520.

The previous prime is 41021015625511. The next prime is 41021015625613. The reversal of 41021015625521 is 12552651012014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40552557511921 + 468458113600 = 6368089^2 + 684440^2 .

It is a cyclic number.

It is not a de Polignac number, because 41021015625521 - 2³⁸ = 40746137718577 is a prime.

It is not a weakly prime, because it can be changed into another prime (41021015625511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20510507812760 + 20510507812761.

It is an arithmetic number, because the mean of its divisors is an integer number (20510507812761).

Almost surely, 2^{41021015625521} is an apocalyptic number.

It is an amenable number.

41021015625521 is a deficient number, since it is larger than the sum of its proper divisors (1).

41021015625521 is an equidigital number, since it uses as much as digits as its factorization.

41021015625521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 41021015625521 its reverse (12552651012014), we get a palindrome (53573666637535).

The spelling of 41021015625521 in words is "forty-one trillion, twenty-one billion, fifteen million, six hundred twenty-five thousand, five hundred twenty-one".