1825057709 has 2 divisors, whose sum is σ = 1825057710. Its totient is φ = 1825057708.

The previous prime is 1825057681. The next prime is 1825057747. The reversal of 1825057709 is 9077505281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1156680100 + 668377609 = 34010^2 + 25853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825057709 - 2¹² = 1825053613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1825057709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1825057789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912528854 + 912528855.

It is an arithmetic number, because the mean of its divisors is an integer number (912528855).

Almost surely, 2^1825057709 is an apocalyptic number.

It is an amenable number.

1825057709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825057709 is an equidigital number, since it uses as much as digits as its factorization.

1825057709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 1825057709 is about 42720.6941540046. The cubic root of 1825057709 is about 1222.0590752118.

The spelling of 1825057709 in words is "one billion, eight hundred twenty-five million, fifty-seven thousand, seven hundred nine".