531381025 has 12 divisors (see below), whose sum is σ = 753043072. Its totient is φ = 364375440.

The previous prime is 531380981. The next prime is 531381041. The reversal of 531381025 is 520183135.

It is not a de Polignac number, because 531381025 - 2⁹ = 531380513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531380984 and 531381002.

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, 1518057 + ... + 1518406.

Almost surely, 2^531381025 is an apocalyptic number.

It is an amenable number.

531381025 is a deficient number, since it is larger than the sum of its proper divisors (221662047).

531381025 is a wasteful number, since it uses less digits than its factorization.

531381025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036480 (or 3036475 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 531381025 is about 23051.7032993226. The cubic root of 531381025 is about 809.9695283970.

The spelling of 531381025 in words is "five hundred thirty-one million, three hundred eighty-one thousand, twenty-five".