521475234625 has 32 divisors (see below), whose sum is σ = 656184072960. Its totient is φ = 413738640000.

The previous prime is 521475234587. The next prime is 521475234629. The reversal of 521475234625 is 526432574125.

It is a de Polignac number, because none of the positive numbers 2^k-521475234625 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521475234629) 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 in 31 ways as a sum of consecutive naturals, for example, 11661309 + ... + 11705941.

It is an arithmetic number, because the mean of its divisors is an integer number (20505752280).

Almost surely, 2^521475234625 is an apocalyptic number.

It is an amenable number.

521475234625 is a deficient number, since it is larger than the sum of its proper divisors (134708838335).

521475234625 is a wasteful number, since it uses less digits than its factorization.

521475234625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45418 (or 45408 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 46.

The spelling of 521475234625 in words is "five hundred twenty-one billion, four hundred seventy-five million, two hundred thirty-four thousand, six hundred twenty-five".