531212525 has 6 divisors (see below), whose sum is σ = 658703562. Its totient is φ = 424970000.

The previous prime is 531212519. The next prime is 531212527. The reversal of 531212525 is 525212135.

It can be written as a sum of positive squares in 3 ways, for example, as 106110601 + 425101924 = 10301^2 + 20618^2 .

It is not a de Polignac number, because 531212525 - 2¹⁰ = 531211501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531212494 and 531212503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531212527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10624226 + ... + 10624275.

It is an arithmetic number, because the mean of its divisors is an integer number (109783927).

Almost surely, 2^531212525 is an apocalyptic number.

It is an amenable number.

531212525 is a deficient number, since it is larger than the sum of its proper divisors (127491037).

531212525 is a wasteful number, since it uses less digits than its factorization.

531212525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21248511 (or 21248506 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 531212525 is about 23048.0481820045. The cubic root of 531212525 is about 809.8839060359.

The spelling of 531212525 in words is "five hundred thirty-one million, two hundred twelve thousand, five hundred twenty-five".