531243345425 has 48 divisors (see below), whose sum is σ = 749530152000. Its totient is φ = 370272487680.

The previous prime is 531243345407. The next prime is 531243345427. The reversal of 531243345425 is 524543342135.

It is not a de Polignac number, because 531243345425 - 2⁸ = 531243345169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531243345427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1501166 + ... + 1820984.

It is an arithmetic number, because the mean of its divisors is an integer number (15615211500).

Almost surely, 2^531243345425 is an apocalyptic number.

It is an amenable number.

531243345425 is a deficient number, since it is larger than the sum of its proper divisors (218286806575).

531243345425 is a wasteful number, since it uses less digits than its factorization.

531243345425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320130 (or 320125 counting only the distinct ones).

The product of its digits is 864000, while the sum is 41.

The spelling of 531243345425 in words is "five hundred thirty-one billion, two hundred forty-three million, three hundred forty-five thousand, four hundred twenty-five".