221352104425 has 24 divisors (see below), whose sum is σ = 291219325056. Its totient is φ = 166322730240.

The previous prime is 221352104399. The next prime is 221352104431. The reversal of 221352104425 is 524401253122.

It is a happy number.

221352104425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221352104425 - 2³¹ = 219204620777 is a prime.

It is a super-2 number, since 2×221352104425² (a number of 23 digits) 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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327757 + ... + 741706.

It is an arithmetic number, because the mean of its divisors is an integer number (12134138544).

Almost surely, 2^221352104425 is an apocalyptic number.

221352104425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221352104425 is a deficient number, since it is larger than the sum of its proper divisors (69867220631).

221352104425 is a wasteful number, since it uses less digits than its factorization.

221352104425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069977 (or 1069972 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 221352104425 its reverse (524401253122), we get a palindrome (745753357547).

The spelling of 221352104425 in words is "two hundred twenty-one billion, three hundred fifty-two million, one hundred four thousand, four hundred twenty-five".