381725 has 6 divisors (see below), whose sum is σ = 473370. Its totient is φ = 305360.

The previous prime is 381713. The next prime is 381737. The reversal of 381725 is 527183.

It is an interprime number because it is at equal distance from previous prime (381713) and next prime (381737).

It can be written as a sum of positive squares in 3 ways, for example, as 19321 + 362404 = 139^2 + 602^2 .

It is not a de Polignac number, because 381725 - 2¹⁶ = 316189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381694 and 381703.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 7610 + ... + 7659.

It is an arithmetic number, because the mean of its divisors is an integer number (78895).

2³⁸¹⁷²⁵ is an apocalyptic number.

It is an amenable number.

381725 is a deficient number, since it is larger than the sum of its proper divisors (91645).

381725 is a wasteful number, since it uses less digits than its factorization.

381725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15279 (or 15274 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 381725 is about 617.8389757858. The cubic root of 381725 is about 72.5409994023.

The spelling of 381725 in words is "three hundred eighty-one thousand, seven hundred twenty-five".