521043523325 has 12 divisors (see below), whose sum is σ = 695793505428. Its totient is φ = 384770601600.

The previous prime is 521043523307. The next prime is 521043523339. The reversal of 521043523325 is 523325340125.

It can be written as a sum of positive squares in 6 ways, for example, as 33765532516 + 487277990809 = 183754^2 + 698053^2 .

It is not a de Polignac number, because 521043523325 - 2⁶ = 521043523261 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801605096 + ... + 801605745.

It is an arithmetic number, because the mean of its divisors is an integer number (57982792119).

Almost surely, 2^521043523325 is an apocalyptic number.

It is an amenable number.

521043523325 is a deficient number, since it is larger than the sum of its proper divisors (174749982103).

521043523325 is a wasteful number, since it uses less digits than its factorization.

521043523325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603210864 (or 1603210859 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 521043523325 in words is "five hundred twenty-one billion, forty-three million, five hundred twenty-three thousand, three hundred twenty-five".