250220506 has 4 divisors (see below), whose sum is σ = 375330762. Its totient is φ = 125110252.

The previous prime is 250220489. The next prime is 250220507. The reversal of 250220506 is 605022052.

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., 220789881 + 29430625 = 14859^2 + 5425^2 .

It is a super-2 number, since 2×250220506² = 125220603245792072, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (250220507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62555125 + ... + 62555128.

Almost surely, 2^250220506 is an apocalyptic number.

250220506 is a deficient number, since it is larger than the sum of its proper divisors (125110256).

250220506 is a wasteful number, since it uses less digits than its factorization.

250220506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125110255.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 250220506 is about 15818.3597759060. The cubic root of 250220506 is about 630.1456839539.

Adding to 250220506 its reverse (605022052), we get a palindrome (855242558).

The spelling of 250220506 in words is "two hundred fifty million, two hundred twenty thousand, five hundred six".