1725450561 has 6 divisors (see below), whose sum is σ = 2492317490. Its totient is φ = 1150300368.

The previous prime is 1725450527. The next prime is 1725450583. The reversal of 1725450561 is 1650545271.

It can be written as a sum of positive squares in only one way, i.e., 1417974336 + 307476225 = 37656^2 + 17535^2 .

It is not a de Polignac number, because 1725450561 - 2¹⁷ = 1725319489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1725450521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95858356 + ... + 95858373.

Almost surely, 2^1725450561 is an apocalyptic number.

It is an amenable number.

1725450561 is a deficient number, since it is larger than the sum of its proper divisors (766866929).

1725450561 is a wasteful number, since it uses less digits than its factorization.

1725450561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191716735 (or 191716732 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 1725450561 is about 41538.5430774841. The cubic root of 1725450561 is about 1199.4095616164.

The spelling of 1725450561 in words is "one billion, seven hundred twenty-five million, four hundred fifty thousand, five hundred sixty-one".