250609649 has 2 divisors, whose sum is σ = 250609650. Its totient is φ = 250609648.

The previous prime is 250609637. The next prime is 250609661. The reversal of 250609649 is 946906052.

It is a balanced prime because it is at equal distance from previous prime (250609637) and next prime (250609661).

It can be written as a sum of positive squares in only one way, i.e., 246333025 + 4276624 = 15695^2 + 2068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250609649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (250609669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125304824 + 125304825.

It is an arithmetic number, because the mean of its divisors is an integer number (125304825).

Almost surely, 2^250609649 is an apocalyptic number.

It is an amenable number.

250609649 is a deficient number, since it is larger than the sum of its proper divisors (1).

250609649 is an equidigital number, since it uses as much as digits as its factorization.

250609649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 250609649 is about 15830.6553559857. The cubic root of 250609649 is about 630.4721823361.

The spelling of 250609649 in words is "two hundred fifty million, six hundred nine thousand, six hundred forty-nine".