1262501249 has 2 divisors, whose sum is σ = 1262501250. Its totient is φ = 1262501248.

The previous prime is 1262501237. The next prime is 1262501281. The reversal of 1262501249 is 9421052621.

It is an a-pointer prime, because the next prime (1262501281) can be obtained adding 1262501249 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727273024 + 535228225 = 26968^2 + 23135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1262501249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1262501749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631250624 + 631250625.

It is an arithmetic number, because the mean of its divisors is an integer number (631250625).

Almost surely, 2^1262501249 is an apocalyptic number.

It is an amenable number.

1262501249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262501249 is an equidigital number, since it uses as much as digits as its factorization.

1262501249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1262501249 is about 35531.6935847421. The cubic root of 1262501249 is about 1080.7965228855.

The spelling of 1262501249 in words is "one billion, two hundred sixty-two million, five hundred one thousand, two hundred forty-nine".