1725299797 has 4 divisors (see below), whose sum is σ = 1858015180. Its totient is φ = 1592584416.

The previous prime is 1725299767. The next prime is 1725299801. The reversal of 1725299797 is 7979925271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7979925271 = 10103 ⋅789857.

It can be written as a sum of positive squares in 2 ways, for example, as 1133399556 + 591900241 = 33666^2 + 24329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1725299797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725299747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66357672 + ... + 66357697.

It is an arithmetic number, because the mean of its divisors is an integer number (464503795).

Almost surely, 2^1725299797 is an apocalyptic number.

It is an amenable number.

1725299797 is a deficient number, since it is larger than the sum of its proper divisors (132715383).

1725299797 is a wasteful number, since it uses less digits than its factorization.

1725299797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132715382.

The product of its digits is 5000940, while the sum is 58.

The square root of 1725299797 is about 41536.7282895512. The cubic root of 1725299797 is about 1199.3746271565.

The spelling of 1725299797 in words is "one billion, seven hundred twenty-five million, two hundred ninety-nine thousand, seven hundred ninety-seven".