250664166 has 32 divisors (see below), whose sum is σ = 581253120. Its totient is φ = 79921512.

The previous prime is 250664149. The next prime is 250664173. The reversal of 250664166 is 661466052.

It is a happy number.

250664166 is a `hidden beast` number, since 2 + 5 + 0 + 6 + 641 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 250664166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99670 + ... + 102153.

It is an arithmetic number, because the mean of its divisors is an integer number (18164160).

Almost surely, 2^250664166 is an apocalyptic number.

250664166 is an abundant number, since it is smaller than the sum of its proper divisors (330588954).

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

250664166 is a wasteful number, since it uses less digits than its factorization.

250664166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201857 (or 201851 counting only the distinct ones).

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

The square root of 250664166 is about 15832.3771430572. The cubic root of 250664166 is about 630.5178961385.

It can be divided in two parts, 25066416 and 6, that multiplied together give a triangular number (150398496 = T₁₇₃₄₃).

The spelling of 250664166 in words is "two hundred fifty million, six hundred sixty-four thousand, one hundred sixty-six".