250146666 has 288 divisors, whose sum is σ = 768268800. Its totient is φ = 57879360.

The previous prime is 250146649. The next prime is 250146667. The reversal of 250146666 is 666641052.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 250146666.

It is not an unprimeable number, because it can be changed into a prime (250146667) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4239745 + ... + 4239803.

It is an arithmetic number, because the mean of its divisors is an integer number (2667600).

Almost surely, 2^250146666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250146666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384134400).

250146666 is an abundant number, since it is smaller than the sum of its proper divisors (518122134).

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

250146666 is a wasteful number, since it uses less digits than its factorization.

250146666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 250146666 is about 15816.0256069595. The cubic root of 250146666 is about 630.0836925850.

The spelling of 250146666 in words is "two hundred fifty million, one hundred forty-six thousand, six hundred sixty-six".