312725 has 12 divisors (see below), whose sum is σ = 443424. Its totient is φ = 214320.

The previous prime is 312709. The next prime is 312727. The reversal of 312725 is 527213.

It is not a de Polignac number, because 312725 - 2⁴ = 312709 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 = 312697 and 312706.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312725.

It is not an unprimeable number, because it can be changed into a prime (312727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (36952).

2³¹²⁷²⁵ is an apocalyptic number.

312725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312725 is a deficient number, since it is larger than the sum of its proper divisors (130699).

312725 is a wasteful number, since it uses less digits than its factorization.

312725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1799 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 312725 is about 559.2182042817. The cubic root of 312725 is about 67.8767230134.

Adding to 312725 its reverse (527213), we get a palindrome (839938).

The spelling of 312725 in words is "three hundred twelve thousand, seven hundred twenty-five".