1642352225 has 6 divisors (see below), whose sum is σ = 2036516790. Its totient is φ = 1313881760.

The previous prime is 1642352177. The next prime is 1642352233. The reversal of 1642352225 is 5222532461.

It can be written as a sum of positive squares in 3 ways, for example, as 12453841 + 1629898384 = 3529^2 + 40372^2 .

It is not a de Polignac number, because 1642352225 - 2¹² = 1642348129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642352191 and 1642352200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32847020 + ... + 32847069.

It is an arithmetic number, because the mean of its divisors is an integer number (339419465).

Almost surely, 2^1642352225 is an apocalyptic number.

It is an amenable number.

1642352225 is a deficient number, since it is larger than the sum of its proper divisors (394164565).

1642352225 is an equidigital number, since it uses as much as digits as its factorization.

1642352225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65694099 (or 65694094 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 1642352225 is about 40525.9450845998. The cubic root of 1642352225 is about 1179.8372429451.

Adding to 1642352225 its reverse (5222532461), we get a palindrome (6864884686).

The spelling of 1642352225 in words is "one billion, six hundred forty-two million, three hundred fifty-two thousand, two hundred twenty-five".