250868564 has 6 divisors (see below), whose sum is σ = 439019994. Its totient is φ = 125434280.

The previous prime is 250868491. The next prime is 250868581. The reversal of 250868564 is 465868052.

It can be written as a sum of positive squares in only one way, i.e., 153016900 + 97851664 = 12370^2 + 9892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31358567 + ... + 31358574.

It is an arithmetic number, because the mean of its divisors is an integer number (73169999).

Almost surely, 2^250868564 is an apocalyptic number.

It is an amenable number.

250868564 is a deficient number, since it is larger than the sum of its proper divisors (188151430).

250868564 is a wasteful number, since it uses less digits than its factorization.

250868564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62717145 (or 62717143 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 250868564 is about 15838.8308911990. The cubic root of 250868564 is about 630.6892297400.

The spelling of 250868564 in words is "two hundred fifty million, eight hundred sixty-eight thousand, five hundred sixty-four".