250961144 has 72 divisors (see below), whose sum is σ = 559566720. Its totient is φ = 105204960.

The previous prime is 250961143. The next prime is 250961149. The reversal of 250961144 is 441169052.

It is a self number, because there is not a number n which added to its sum of digits gives 250961144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250961143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1976009 + ... + 1976135.

It is an arithmetic number, because the mean of its divisors is an integer number (7771760).

Almost surely, 2^250961144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250961144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279783360).

250961144 is an abundant number, since it is smaller than the sum of its proper divisors (308605576).

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

250961144 is a wasteful number, since it uses less digits than its factorization.

250961144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 250961144 is about 15841.7531858062. The cubic root of 250961144 is about 630.7668029346.

The spelling of 250961144 in words is "two hundred fifty million, nine hundred sixty-one thousand, one hundred forty-four".