221052132325 has 18 divisors (see below), whose sum is σ = 286540410674. Its totient is φ = 169152925920.

The previous prime is 221052132299. The next prime is 221052132341. The reversal of 221052132325 is 523231250122.

It can be written as a sum of positive squares in 3 ways, for example, as 72439569316 + 148612563009 = 269146^2 + 385503^2 .

It is not a de Polignac number, because 221052132325 - 2²³ = 221043743717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221052132293 and 221052132302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8344134 + ... + 8370583.

Almost surely, 2^221052132325 is an apocalyptic number.

221052132325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221052132325 is a deficient number, since it is larger than the sum of its proper divisors (65488278349).

221052132325 is a wasteful number, since it uses less digits than its factorization.

221052132325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16714773 (or 16714745 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 221052132325 its reverse (523231250122), we get a palindrome (744283382447).

The spelling of 221052132325 in words is "two hundred twenty-one billion, fifty-two million, one hundred thirty-two thousand, three hundred twenty-five".