250465866 has 128 divisors (see below), whose sum is σ = 635904000. Its totient is φ = 64157184.

The previous prime is 250465849. The next prime is 250465877. The reversal of 250465866 is 668564052.

It is a super-2 number, since 2×250465866² = 125466300062259912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1828150 + ... + 1828286.

It is an arithmetic number, because the mean of its divisors is an integer number (4968000).

Almost surely, 2^250465866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250465866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317952000).

250465866 is an abundant number, since it is smaller than the sum of its proper divisors (385438134).

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

250465866 is a wasteful number, since it uses less digits than its factorization.

250465866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 250465866 is about 15826.1134205464. The cubic root of 250465866 is about 630.3515850590.

The spelling of 250465866 in words is "two hundred fifty million, four hundred sixty-five thousand, eight hundred sixty-six".