387725 has 12 divisors (see below), whose sum is σ = 518196. Its totient is φ = 286080.

The previous prime is 387721. The next prime is 387727. The reversal of 387725 is 527783.

It can be written as a sum of positive squares in 6 ways, for example, as 40804 + 346921 = 202^2 + 589^2 .

It is not a de Polignac number, because 387725 - 2² = 387721 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 = 387691 and 387700.

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 387725.

It is not an unprimeable number, because it can be changed into a prime (387721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (43183).

2³⁸⁷⁷²⁵ is an apocalyptic number.

It is an amenable number.

387725 is a deficient number, since it is larger than the sum of its proper divisors (130471).

387725 is a wasteful number, since it uses less digits than its factorization.

387725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1211 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 387725 is about 622.6756780219. The cubic root of 387725 is about 72.9190947037.

It can be divided in two parts, 3 and 87725, that multiplied together give a triangular number (263175 = T₇₂₅).

The spelling of 387725 in words is "three hundred eighty-seven thousand, seven hundred twenty-five".