1725542849 has 2 divisors, whose sum is σ = 1725542850. Its totient is φ = 1725542848.

The previous prime is 1725542831. The next prime is 1725542887. The reversal of 1725542849 is 9482455271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1363972624 + 361570225 = 36932^2 + 19015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1725542849 - 2²⁰ = 1724494273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1725542809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862771424 + 862771425.

It is an arithmetic number, because the mean of its divisors is an integer number (862771425).

Almost surely, 2^1725542849 is an apocalyptic number.

It is an amenable number.

1725542849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725542849 is an equidigital number, since it uses as much as digits as its factorization.

1725542849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The square root of 1725542849 is about 41539.6539345238. The cubic root of 1725542849 is about 1199.4309452362.

The spelling of 1725542849 in words is "one billion, seven hundred twenty-five million, five hundred forty-two thousand, eight hundred forty-nine".