250664531 has 8 divisors (see below), whose sum is σ = 270232704. Its totient is φ = 231137280.

The previous prime is 250664503. The next prime is 250664563. The reversal of 250664531 is 135466052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250664531 - 2¹⁴ = 250648147 is a prime.

It is a super-2 number, since 2×250664531² = 125665414202899922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250664581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3155 + ... + 22611.

It is an arithmetic number, because the mean of its divisors is an integer number (33779088).

Almost surely, 2^250664531 is an apocalyptic number.

250664531 is a deficient number, since it is larger than the sum of its proper divisors (19568173).

250664531 is a wasteful number, since it uses less digits than its factorization.

250664531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20461.

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

The square root of 250664531 is about 15832.3886700649. The cubic root of 250664531 is about 630.5182021773.

The spelling of 250664531 in words is "two hundred fifty million, six hundred sixty-four thousand, five hundred thirty-one".