531445525 has 12 divisors (see below), whose sum is σ = 709684612. Its totient is φ = 392451840.

The previous prime is 531445513. The next prime is 531445531. The reversal of 531445525 is 525544135.

It can be written as a sum of positive squares in 6 ways, for example, as 72029169 + 459416356 = 8487^2 + 21434^2 .

It is not a de Polignac number, because 531445525 - 2²³ = 523056917 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817284 + ... + 817933.

Almost surely, 2^531445525 is an apocalyptic number.

It is an amenable number.

531445525 is a deficient number, since it is larger than the sum of its proper divisors (178239087).

531445525 is a wasteful number, since it uses less digits than its factorization.

531445525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635240 (or 1635235 counting only the distinct ones).

The product of its digits is 60000, while the sum is 34.

The square root of 531445525 is about 23053.1022858096. The cubic root of 531445525 is about 810.0022989316.

The spelling of 531445525 in words is "five hundred thirty-one million, four hundred forty-five thousand, five hundred twenty-five".