257782830250 has 64 divisors (see below), whose sum is σ = 531652253184. Its totient is φ = 92811000000.

The previous prime is 257782830229. The next prime is 257782830251. The reversal of 257782830250 is 52038287752.

It is a junction number, because it is equal to n+sod(n) for n = 257782830194 and 257782830203.

It is not an unprimeable number, because it can be changed into a prime (257782830251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186306 + ... + 741805.

It is an arithmetic number, because the mean of its divisors is an integer number (8307066456).

Almost surely, 2^257782830250 is an apocalyptic number.

257782830250 is an abundant number, since it is smaller than the sum of its proper divisors (273869422934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257782830250 is a wasteful number, since it uses less digits than its factorization.

257782830250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928240 (or 928230 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 257782830250 in words is "two hundred fifty-seven billion, seven hundred eighty-two million, eight hundred thirty thousand, two hundred fifty".