312405425 has 6 divisors (see below), whose sum is σ = 387382758. Its totient is φ = 249924320.

The previous prime is 312405407. The next prime is 312405427. The reversal of 312405425 is 524504213.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 68046001 + 244359424 = 8249^2 + 15632^2 .

It is not a de Polignac number, because 312405425 - 2⁸ = 312405169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312405394 and 312405403.

It is not an unprimeable number, because it can be changed into a prime (312405427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6248084 + ... + 6248133.

It is an arithmetic number, because the mean of its divisors is an integer number (64563793).

Almost surely, 2^312405425 is an apocalyptic number.

It is an amenable number.

312405425 is a deficient number, since it is larger than the sum of its proper divisors (74977333).

312405425 is a wasteful number, since it uses less digits than its factorization.

312405425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496227 (or 12496222 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 312405425 is about 17674.9943422905. The cubic root of 312405425 is about 678.5359396293.

Adding to 312405425 its reverse (524504213), we get a palindrome (836909638).

The spelling of 312405425 in words is "three hundred twelve million, four hundred five thousand, four hundred twenty-five".