1725380617 has 2 divisors, whose sum is σ = 1725380618. Its totient is φ = 1725380616.

The previous prime is 1725380593. The next prime is 1725380639. The reversal of 1725380617 is 7160835271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1476403776 + 248976841 = 38424^2 + 15779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1725380617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1725380617.

It is not a weakly prime, because it can be changed into another prime (1725380687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862690308 + 862690309.

It is an arithmetic number, because the mean of its divisors is an integer number (862690309).

Almost surely, 2^1725380617 is an apocalyptic number.

It is an amenable number.

1725380617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725380617 is an equidigital number, since it uses as much as digits as its factorization.

1725380617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1725380617 is about 41537.7011520859. The cubic root of 1725380617 is about 1199.3933547122.

The spelling of 1725380617 in words is "one billion, seven hundred twenty-five million, three hundred eighty thousand, six hundred seventeen".