232531225 has 12 divisors (see below), whose sum is σ = 289838716. Its totient is φ = 185057280.

The previous prime is 232531181. The next prime is 232531241. The reversal of 232531225 is 522135232.

232531225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 5004169 + 227527056 = 2237^2 + 15084^2 .

It is not a de Polignac number, because 232531225 - 2⁷ = 232531097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232531225.

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, 19272 + ... + 28921.

Almost surely, 2^232531225 is an apocalyptic number.

232531225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

232531225 is a deficient number, since it is larger than the sum of its proper divisors (57307491).

232531225 is a wasteful number, since it uses less digits than its factorization.

232531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48396 (or 48391 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 232531225 is about 15248.9745556873. The cubic root of 232531225 is about 614.9319994438.

Adding to 232531225 its reverse (522135232), we get a palindrome (754666457).

The spelling of 232531225 in words is "two hundred thirty-two million, five hundred thirty-one thousand, two hundred twenty-five".