531345125 has 16 divisors (see below), whose sum is σ = 664717872. Its totient is φ = 424051200.

The previous prime is 531345121. The next prime is 531345179. The reversal of 531345125 is 521543135.

It can be written as a sum of positive squares in 8 ways, for example, as 111218116 + 420127009 = 10546^2 + 20497^2 .

It is not a de Polignac number, because 531345125 - 2² = 531345121 is a prime.

It is a super-2 number, since 2×531345125² = 564655283722531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531345121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49217 + ... + 59033.

It is an arithmetic number, because the mean of its divisors is an integer number (41544867).

Almost surely, 2^531345125 is an apocalyptic number.

It is an amenable number.

531345125 is a deficient number, since it is larger than the sum of its proper divisors (133372747).

531345125 is an equidigital number, since it uses as much as digits as its factorization.

531345125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10265 (or 10255 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 531345125 is about 23050.9246018462. The cubic root of 531345125 is about 809.9512875242.

The spelling of 531345125 in words is "five hundred thirty-one million, three hundred forty-five thousand, one hundred twenty-five".