531564413525 has 6 divisors (see below), whose sum is σ = 659139872802. Its totient is φ = 425251530800.

The previous prime is 531564413519. The next prime is 531564413593. The reversal of 531564413525 is 525314465135.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 20084841841 + 511479571684 = 141721^2 + 715178^2 .

It is not a de Polignac number, because 531564413525 - 2²⁰ = 531563364949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10631288246 + ... + 10631288295.

It is an arithmetic number, because the mean of its divisors is an integer number (109856645467).

Almost surely, 2^531564413525 is an apocalyptic number.

It is an amenable number.

531564413525 is a deficient number, since it is larger than the sum of its proper divisors (127575459277).

531564413525 is a wasteful number, since it uses less digits than its factorization.

531564413525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21262576551 (or 21262576546 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 44.

The spelling of 531564413525 in words is "five hundred thirty-one billion, five hundred sixty-four million, four hundred thirteen thousand, five hundred twenty-five".