250513664 has 18 divisors (see below), whose sum is σ = 500049270. Its totient is φ = 125256704.

The previous prime is 250513663. The next prime is 250513673. The reversal of 250513664 is 466315052.

It can be written as a sum of positive squares in only one way, i.e., 168792064 + 81721600 = 12992^2 + 9040^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 250513664.

It is not an unprimeable number, because it can be changed into a prime (250513663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489029 + ... + 489540.

It is an arithmetic number, because the mean of its divisors is an integer number (27780515).

Almost surely, 2^250513664 is an apocalyptic number.

It is an amenable number.

250513664 is a deficient number, since it is larger than the sum of its proper divisors (249535606).

250513664 is an frugal number, since it uses more digits than its factorization.

250513664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978585 (or 978571 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 250513664 is about 15827.6234476310. The cubic root of 250513664 is about 630.3916805141.

The spelling of 250513664 in words is "two hundred fifty million, five hundred thirteen thousand, six hundred sixty-four".