491725 has 24 divisors (see below), whose sum is σ = 703080. Its totient is φ = 337920.

The previous prime is 491719. The next prime is 491731. The reversal of 491725 is 527194.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (491719) and next prime (491731).

It can be written as a sum of positive squares in 12 ways, for example, as 227529 + 264196 = 477^2 + 514^2 .

It is not a de Polignac number, because 491725 - 2⁹ = 491213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491693 and 491702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5481 + ... + 5569.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2⁴⁹¹⁷²⁵ is an apocalyptic number.

It is an amenable number.

491725 is a deficient number, since it is larger than the sum of its proper divisors (211355).

491725 is a wasteful number, since it uses less digits than its factorization.

491725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 491725 is about 701.2310603503. The cubic root of 491725 is about 78.9297565002.

The spelling of 491725 in words is "four hundred ninety-one thousand, seven hundred twenty-five".