403231025 has 6 divisors (see below), whose sum is σ = 500006502. Its totient is φ = 322584800.

The previous prime is 403230967. The next prime is 403231039. The reversal of 403231025 is 520132304.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6105841 + 397125184 = 2471^2 + 19928^2 .

It is a de Polignac number, because none of the positive numbers 2^k-403231025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 403230988 and 403231006.

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, 8064596 + ... + 8064645.

It is an arithmetic number, because the mean of its divisors is an integer number (83334417).

Almost surely, 2^403231025 is an apocalyptic number.

It is an amenable number.

403231025 is a deficient number, since it is larger than the sum of its proper divisors (96775477).

403231025 is a wasteful number, since it uses less digits than its factorization.

403231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16129251 (or 16129246 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 403231025 is about 20080.6131629490. The cubic root of 403231025 is about 738.7848482811.

Adding to 403231025 its reverse (520132304), we get a palindrome (923363329).

The spelling of 403231025 in words is "four hundred three million, two hundred thirty-one thousand, twenty-five".