531421025 has 6 divisors (see below), whose sum is σ = 658962102. Its totient is φ = 425136800.

The previous prime is 531421001. The next prime is 531421043. The reversal of 531421025 is 520124135.

It can be written as a sum of positive squares in 3 ways, for example, as 164660224 + 366760801 = 12832^2 + 19151^2 .

It is not a de Polignac number, because 531421025 - 2¹² = 531416929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10628396 + ... + 10628445.

It is an arithmetic number, because the mean of its divisors is an integer number (109827017).

Almost surely, 2^531421025 is an apocalyptic number.

It is an amenable number.

531421025 is a deficient number, since it is larger than the sum of its proper divisors (127541077).

531421025 is a wasteful number, since it uses less digits than its factorization.

531421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21256851 (or 21256846 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 531421025 is about 23052.5708978413. The cubic root of 531421025 is about 809.9898515215.

The spelling of 531421025 in words is "five hundred thirty-one million, four hundred twenty-one thousand, twenty-five".