1250231257 has 8 divisors (see below), whose sum is σ = 1389623040. Its totient is φ = 1115128560.

The previous prime is 1250231243. The next prime is 1250231273. The reversal of 1250231257 is 7521320521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1250231257 - 2¹¹ = 1250229209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250231287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071657 + ... + 1072822.

It is an arithmetic number, because the mean of its divisors is an integer number (173702880).

Almost surely, 2^1250231257 is an apocalyptic number.

It is an amenable number.

1250231257 is a deficient number, since it is larger than the sum of its proper divisors (139391783).

1250231257 is a wasteful number, since it uses less digits than its factorization.

1250231257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144543.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1250231257 is about 35358.6093759356. The cubic root of 1250231257 is about 1077.2837713334.

Adding to 1250231257 its reverse (7521320521), we get a palindrome (8771551778).

The spelling of 1250231257 in words is "one billion, two hundred fifty million, two hundred thirty-one thousand, two hundred fifty-seven".