531251225 has 12 divisors (see below), whose sum is σ = 659055660. Its totient is φ = 424804800.

The previous prime is 531251183. The next prime is 531251239. The reversal of 531251225 is 522152135.

It can be written as a sum of positive squares in 6 ways, for example, as 73633561 + 457617664 = 8581^2 + 21392^2 .

It is not a de Polignac number, because 531251225 - 2²² = 527056921 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531251194 and 531251203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77435 + ... + 84015.

It is an arithmetic number, because the mean of its divisors is an integer number (54921305).

Almost surely, 2^531251225 is an apocalyptic number.

It is an amenable number.

531251225 is a deficient number, since it is larger than the sum of its proper divisors (127804435).

531251225 is a wasteful number, since it uses less digits than its factorization.

531251225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9820 (or 9815 counting only the distinct ones).

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

The square root of 531251225 is about 23048.8877171980. The cubic root of 531251225 is about 809.9035728325.

The spelling of 531251225 in words is "five hundred thirty-one million, two hundred fifty-one thousand, two hundred twenty-five".