1255000949 has 2 divisors, whose sum is σ = 1255000950. Its totient is φ = 1255000948.

The previous prime is 1255000937. The next prime is 1255000963. The reversal of 1255000949 is 9490005521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675636049 + 579364900 = 25993^2 + 24070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255000949 - 2⁴ = 1255000933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255000969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627500474 + 627500475.

It is an arithmetic number, because the mean of its divisors is an integer number (627500475).

Almost surely, 2^1255000949 is an apocalyptic number.

It is an amenable number.

1255000949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255000949 is an equidigital number, since it uses as much as digits as its factorization.

1255000949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1255000949 is about 35425.9925619594. The cubic root of 1255000949 is about 1078.6519958838.

The spelling of 1255000949 in words is "one billion, two hundred fifty-five million, nine hundred forty-nine", and thus it is an aban number.