1725606149 has 2 divisors, whose sum is σ = 1725606150. Its totient is φ = 1725606148.

The previous prime is 1725606139. The next prime is 1725606173. The reversal of 1725606149 is 9416065271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1657955524 + 67650625 = 40718^2 + 8225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1725606149 is a prime.

It is a super-2 number, since 2×1725606149² = 5955433162933220402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1725606139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862803074 + 862803075.

It is an arithmetic number, because the mean of its divisors is an integer number (862803075).

Almost surely, 2^1725606149 is an apocalyptic number.

It is an amenable number.

1725606149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725606149 is an equidigital number, since it uses as much as digits as its factorization.

1725606149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1725606149 is about 41540.4158501092. The cubic root of 1725606149 is about 1199.4456117416.

The spelling of 1725606149 in words is "one billion, seven hundred twenty-five million, six hundred six thousand, one hundred forty-nine".