250405222 has 4 divisors (see below), whose sum is σ = 375607836. Its totient is φ = 125202610.

The previous prime is 250405219. The next prime is 250405241. The reversal of 250405222 is 222504052.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 250405193 and 250405202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62601304 + ... + 62601307.

It is an arithmetic number, because the mean of its divisors is an integer number (93901959).

Almost surely, 2^250405222 is an apocalyptic number.

250405222 is a deficient number, since it is larger than the sum of its proper divisors (125202614).

250405222 is a wasteful number, since it uses less digits than its factorization.

250405222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125202613.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 250405222 is about 15824.1973572122. The cubic root of 250405222 is about 630.3007063667.

Adding to 250405222 its reverse (222504052), we get a palindrome (472909274).

The spelling of 250405222 in words is "two hundred fifty million, four hundred five thousand, two hundred twenty-two".