1725869 has 2 divisors, whose sum is σ = 1725870. Its totient is φ = 1725868.

The previous prime is 1725859. The next prime is 1725907. The reversal of 1725869 is 9685271.

It is an a-pointer prime, because the next prime (1725907) can be obtained adding 1725869 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 133225 = 1262^2 + 365^2 .

It is an emirp because it is prime and its reverse (9685271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1725869 - 2¹² = 1721773 is a prime.

It is a super-2 number, since 2×1725869² = 5957247610322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1725859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862934 + 862935.

It is an arithmetic number, because the mean of its divisors is an integer number (862935).

2^1725869 is an apocalyptic number.

It is an amenable number.

1725869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725869 is an equidigital number, since it uses as much as digits as its factorization.

1725869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 1725869 is about 1313.7233346485. The cubic root of 1725869 is about 119.9506510047.

The spelling of 1725869 in words is "one million, seven hundred twenty-five thousand, eight hundred sixty-nine".