531445625 has 20 divisors (see below), whose sum is σ = 665590068. Its totient is φ = 424200000.

The previous prime is 531445589. The next prime is 531445631. The reversal of 531445625 is 526544135.

It can be written as a sum of positive squares in 10 ways, for example, as 445716544 + 85729081 = 21112^2 + 9259^2 .

It is not a de Polignac number, because 531445625 - 2¹² = 531441529 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 437519 + ... + 438731.

Almost surely, 2^531445625 is an apocalyptic number.

It is an amenable number.

531445625 is a deficient number, since it is larger than the sum of its proper divisors (134144443).

531445625 is an equidigital number, since it uses as much as digits as its factorization.

531445625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1919 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 531445625 is about 23053.1044547150. The cubic root of 531445625 is about 810.0023497366.

The spelling of 531445625 in words is "five hundred thirty-one million, four hundred forty-five thousand, six hundred twenty-five".