1022252005 has 4 divisors (see below), whose sum is σ = 1226702412. Its totient is φ = 817801600.

The previous prime is 1022251957. The next prime is 1022252017. The reversal of 1022252005 is 5002522201.

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 315915076 + 706336929 = 17774^2 + 26577^2 .

It is not a de Polignac number, because 1022252005 - 2¹¹ = 1022249957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102225196 + ... + 102225205.

It is an arithmetic number, because the mean of its divisors is an integer number (306675603).

Almost surely, 2^1022252005 is an apocalyptic number.

It is an amenable number.

1022252005 is a deficient number, since it is larger than the sum of its proper divisors (204450407).

1022252005 is an equidigital number, since it uses as much as digits as its factorization.

1022252005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204450406.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1022252005 is about 31972.6759124100. The cubic root of 1022252005 is about 1007.3629883446.

Adding to 1022252005 its reverse (5002522201), we get a palindrome (6024774206).

The spelling of 1022252005 in words is "one billion, twenty-two million, two hundred fifty-two thousand, five".