250149749 has 2 divisors, whose sum is σ = 250149750. Its totient is φ = 250149748.

The previous prime is 250149721. The next prime is 250149751. The reversal of 250149749 is 947941052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248692900 + 1456849 = 15770^2 + 1207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250149749 is a prime.

Together with 250149751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250149709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125074874 + 125074875.

It is an arithmetic number, because the mean of its divisors is an integer number (125074875).

Almost surely, 2^250149749 is an apocalyptic number.

It is an amenable number.

250149749 is a deficient number, since it is larger than the sum of its proper divisors (1).

250149749 is an equidigital number, since it uses as much as digits as its factorization.

250149749 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 250149749 is about 15816.1230710943. The cubic root of 250149749 is about 630.0862811198.

The spelling of 250149749 in words is "two hundred fifty million, one hundred forty-nine thousand, seven hundred forty-nine".