531686425 has 24 divisors (see below), whose sum is σ = 685884672. Its totient is φ = 408408000.

The previous prime is 531686399. The next prime is 531686447. The reversal of 531686425 is 524686135.

It is not a de Polignac number, because 531686425 - 2¹³ = 531678233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98907 + ... + 104143.

It is an arithmetic number, because the mean of its divisors is an integer number (28578528).

Almost surely, 2^531686425 is an apocalyptic number.

It is an amenable number.

531686425 is a deficient number, since it is larger than the sum of its proper divisors (154198247).

531686425 is a wasteful number, since it uses less digits than its factorization.

531686425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409 (or 5404 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 531686425 is about 23058.3265871572. The cubic root of 531686425 is about 810.1246696285.

The spelling of 531686425 in words is "five hundred thirty-one million, six hundred eighty-six thousand, four hundred twenty-five".