531161025 has 24 divisors (see below), whose sum is σ = 879348480. Its totient is φ = 282911040.

The previous prime is 531161023. The next prime is 531161051. The reversal of 531161025 is 520161135.

It is not a de Polignac number, because 531161025 - 2¹ = 531161023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531160986 and 531161004.

It is not an unprimeable number, because it can be changed into a prime (531161021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57904 + ... + 66446.

It is an arithmetic number, because the mean of its divisors is an integer number (36639520).

Almost surely, 2^531161025 is an apocalyptic number.

It is an amenable number.

531161025 is a deficient number, since it is larger than the sum of its proper divisors (348187455).

531161025 is a wasteful number, since it uses less digits than its factorization.

531161025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9385 (or 9380 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 531161025 is about 23046.9309236610. The cubic root of 531161025 is about 809.8577329777.

The spelling of 531161025 in words is "five hundred thirty-one million, one hundred sixty-one thousand, twenty-five".