1642622425 has 6 divisors (see below), whose sum is σ = 2036851838. Its totient is φ = 1314097920.

The previous prime is 1642622413. The next prime is 1642622461. The reversal of 1642622425 is 5242262461.

It can be written as a sum of positive squares in 3 ways, for example, as 290736601 + 1351885824 = 17051^2 + 36768^2 .

It is not a de Polignac number, because 1642622425 - 2¹⁷ = 1642491353 is a prime.

It is a super-2 number, since 2×1642622425² = 5396416862225761250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 32852424 + ... + 32852473.

Almost surely, 2^1642622425 is an apocalyptic number.

It is an amenable number.

1642622425 is a deficient number, since it is larger than the sum of its proper divisors (394229413).

1642622425 is an equidigital number, since it uses as much as digits as its factorization.

1642622425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65704907 (or 65704902 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 1642622425 is about 40529.2786143548. The cubic root of 1642622425 is about 1179.9019417223.

Adding to 1642622425 its reverse (5242262461), we get a palindrome (6884884886).

The spelling of 1642622425 in words is "one billion, six hundred forty-two million, six hundred twenty-two thousand, four hundred twenty-five".