1725166 has 4 divisors (see below), whose sum is σ = 2587752. Its totient is φ = 862582.

The previous prime is 1725151. The next prime is 1725173. The reversal of 1725166 is 6615271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6615271 = 13 ⋅508867.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431290 + ... + 431293.

It is an arithmetic number, because the mean of its divisors is an integer number (646938).

2^1725166 is an apocalyptic number.

1725166 is a deficient number, since it is larger than the sum of its proper divisors (862586).

1725166 is an equidigital number, since it uses as much as digits as its factorization.

1725166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862585.

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

The square root of 1725166 is about 1313.4557472561. The cubic root of 1725166 is about 119.9343622521.

It can be divided in two parts, 1725 and 166, that added together give a triangular number (1891 = T₆₁).

The spelling of 1725166 in words is "one million, seven hundred twenty-five thousand, one hundred sixty-six".