352225235521 has 4 divisors (see below), whose sum is σ = 360416520112. Its totient is φ = 344033950932.

The previous prime is 352225235507. The next prime is 352225235569. The reversal of 352225235521 is 125532522253.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125532522253 = 179 ⋅701299007.

It is a cyclic number.

It is not a de Polignac number, because 352225235521 - 2⁹ = 352225235009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (352225265521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4095642231 + ... + 4095642316.

It is an arithmetic number, because the mean of its divisors is an integer number (90104130028).

Almost surely, 2^352225235521 is an apocalyptic number.

It is an amenable number.

352225235521 is a deficient number, since it is larger than the sum of its proper divisors (8191284591).

352225235521 is an equidigital number, since it uses as much as digits as its factorization.

352225235521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191284590.

The product of its digits is 180000, while the sum is 37.

Adding to 352225235521 its reverse (125532522253), we get a palindrome (477757757774).

The spelling of 352225235521 in words is "three hundred fifty-two billion, two hundred twenty-five million, two hundred thirty-five thousand, five hundred twenty-one".