312404425 has 12 divisors (see below), whose sum is σ = 388341340. Its totient is φ = 249304320.

The previous prime is 312404401. The next prime is 312404471. The reversal of 312404425 is 524404213.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1375929 + 311028496 = 1173^2 + 17636^2 .

It is a de Polignac number, because none of the positive numbers 2^k-312404425 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 312404425.

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, 5052 + ... + 25501.

Almost surely, 2^312404425 is an apocalyptic number.

It is an amenable number.

312404425 is a deficient number, since it is larger than the sum of its proper divisors (75936915).

312404425 is a wasteful number, since it uses less digits than its factorization.

312404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30972 (or 30967 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 312404425 is about 17674.9660537156. The cubic root of 312404425 is about 678.5352156377.

Adding to 312404425 its reverse (524404213), we get a palindrome (836808638).

The spelling of 312404425 in words is "three hundred twelve million, four hundred four thousand, four hundred twenty-five".