250663381 has 4 divisors (see below), whose sum is σ = 256777164. Its totient is φ = 244549600.

The previous prime is 250663379. The next prime is 250663393. The reversal of 250663381 is 183366052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7022500 + 243640881 = 2650^2 + 15609^2 .

It is a cyclic number.

It is not a de Polignac number, because 250663381 - 2¹ = 250663379 is a prime.

It is a super-2 number, since 2×250663381² = 125664261148702322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250663081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056830 + ... + 3056911.

It is an arithmetic number, because the mean of its divisors is an integer number (64194291).

Almost surely, 2^250663381 is an apocalyptic number.

It is an amenable number.

250663381 is a deficient number, since it is larger than the sum of its proper divisors (6113783).

250663381 is an equidigital number, since it uses as much as digits as its factorization.

250663381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113782.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 250663381 is about 15832.3523520670. The cubic root of 250663381 is about 630.5172379443.

The spelling of 250663381 in words is "two hundred fifty million, six hundred sixty-three thousand, three hundred eighty-one".