1725288249 has 4 divisors (see below), whose sum is σ = 2300384336. Its totient is φ = 1150192164.

The previous prime is 1725288233. The next prime is 1725288251. The reversal of 1725288249 is 9428825271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1725288249 - 2⁴ = 1725288233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1725288198 and 1725288207.

It is not an unprimeable number, because it can be changed into a prime (1725288289) 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, 287548039 + ... + 287548044.

It is an arithmetic number, because the mean of its divisors is an integer number (575096084).

Almost surely, 2^1725288249 is an apocalyptic number.

It is an amenable number.

1725288249 is a deficient number, since it is larger than the sum of its proper divisors (575096087).

1725288249 is an equidigital number, since it uses as much as digits as its factorization.

1725288249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575096086.

The product of its digits is 645120, while the sum is 48.

The square root of 1725288249 is about 41536.5892798145. The cubic root of 1725288249 is about 1199.3719512141.

It can be divided in two parts, 17252 and 88249, that added together give a palindrome (105501).

The spelling of 1725288249 in words is "one billion, seven hundred twenty-five million, two hundred eighty-eight thousand, two hundred forty-nine".