1312105425 has 48 divisors (see below), whose sum is σ = 2242743360. Its totient is φ = 676512000.

The previous prime is 1312105393. The next prime is 1312105429. The reversal of 1312105425 is 5245012131.

It is a happy number.

It is not a de Polignac number, because 1312105425 - 2⁵ = 1312105393 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312105395 and 1312105404.

It is not an unprimeable number, because it can be changed into a prime (1312105429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 267495 + ... + 272355.

It is an arithmetic number, because the mean of its divisors is an integer number (46723820).

Almost surely, 2^1312105425 is an apocalyptic number.

1312105425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312105425 is a deficient number, since it is larger than the sum of its proper divisors (930637935).

1312105425 is a wasteful number, since it uses less digits than its factorization.

1312105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4994 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1312105425 is about 36222.9958037708. The cubic root of 1312105425 is about 1094.7700565935.

Adding to 1312105425 its reverse (5245012131), we get a palindrome (6557117556).

The spelling of 1312105425 in words is "one billion, three hundred twelve million, one hundred five thousand, four hundred twenty-five".