1250122257 has 6 divisors (see below), whose sum is σ = 1805732162. Its totient is φ = 833414832.

The previous prime is 1250122241. The next prime is 1250122283. The reversal of 1250122257 is 7522210521.

It can be written as a sum of positive squares in only one way, i.e., 913913361 + 336208896 = 30231^2 + 18336^2 .

It is not a de Polignac number, because 1250122257 - 2⁴ = 1250122241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1250122257.

It is not an unprimeable number, because it can be changed into a prime (1250122207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69451228 + ... + 69451245.

Almost surely, 2^1250122257 is an apocalyptic number.

It is an amenable number.

1250122257 is a deficient number, since it is larger than the sum of its proper divisors (555609905).

1250122257 is a wasteful number, since it uses less digits than its factorization.

1250122257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138902479 (or 138902476 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1250122257 is about 35357.0679921285. The cubic root of 1250122257 is about 1077.2524631673.

Adding to 1250122257 its reverse (7522210521), we get a palindrome (8772332778).

The spelling of 1250122257 in words is "one billion, two hundred fifty million, one hundred twenty-two thousand, two hundred fifty-seven".