521725012154011 has 2 divisors, whose sum is σ = 521725012154012. Its totient is φ = 521725012154010.

The previous prime is 521725012153897. The next prime is 521725012154069. The reversal of 521725012154011 is 110451210527125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521725012154011 is a prime.

It is not a weakly prime, because it can be changed into another prime (521725012154711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260862506077005 + 260862506077006.

It is an arithmetic number, because the mean of its divisors is an integer number (260862506077006).

Almost surely, 2^{521725012154011} is an apocalyptic number.

521725012154011 is a deficient number, since it is larger than the sum of its proper divisors (1).

521725012154011 is an equidigital number, since it uses as much as digits as its factorization.

521725012154011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 37.

The spelling of 521725012154011 in words is "five hundred twenty-one trillion, seven hundred twenty-five billion, twelve million, one hundred fifty-four thousand, eleven".