250381394 has 4 divisors (see below), whose sum is σ = 375572094. Its totient is φ = 125190696.

The previous prime is 250381379. The next prime is 250381399. The reversal of 250381394 is 493183052.

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

It can be written as a sum of positive squares in only one way, i.e., 202009369 + 48372025 = 14213^2 + 6955^2 .

It is a super-2 number, since 2×250381394² = 125381684922766472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250381399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62595347 + ... + 62595350.

Almost surely, 2^250381394 is an apocalyptic number.

250381394 is a deficient number, since it is larger than the sum of its proper divisors (125190700).

250381394 is a wasteful number, since it uses less digits than its factorization.

250381394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125190699.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 250381394 is about 15823.4444417137. Note that the first 5 decimals coincide. The cubic root of 250381394 is about 630.2807130648.

The spelling of 250381394 in words is "two hundred fifty million, three hundred eighty-one thousand, three hundred ninety-four".