1205000249 has 2 divisors, whose sum is σ = 1205000250. Its totient is φ = 1205000248.

The previous prime is 1205000227. The next prime is 1205000261. The reversal of 1205000249 is 9420005021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1078662649 + 126337600 = 32843^2 + 11240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205000249 - 2¹² = 1204996153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1205000219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602500124 + 602500125.

It is an arithmetic number, because the mean of its divisors is an integer number (602500125).

Almost surely, 2^1205000249 is an apocalyptic number.

It is an amenable number.

1205000249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205000249 is an equidigital number, since it uses as much as digits as its factorization.

1205000249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1205000249 is about 34713.1135019606. The cubic root of 1205000249 is about 1064.1325120096.

The spelling of 1205000249 in words is "one billion, two hundred five million, two hundred forty-nine", and thus it is an aban number.