3221201525 has 12 divisors (see below), whose sum is σ = 3996580512. Its totient is φ = 2575483440.

The previous prime is 3221201521. The next prime is 3221201527. The reversal of 3221201525 is 5251021223.

It is not a de Polignac number, because 3221201525 - 2² = 3221201521 is a prime.

It is a super-2 number, since 2×3221201525² = 20752278529324651250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221201525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221201521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8624 + ... + 80726.

It is an arithmetic number, because the mean of its divisors is an integer number (333048376).

Almost surely, 2^3221201525 is an apocalyptic number.

It is an amenable number.

3221201525 is a deficient number, since it is larger than the sum of its proper divisors (775378987).

3221201525 is a wasteful number, since it uses less digits than its factorization.

3221201525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73900 (or 73895 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3221201525 is about 56755.6298969538. The cubic root of 3221201525 is about 1476.8599002552.

Adding to 3221201525 its reverse (5251021223), we get a palindrome (8472222748).

The spelling of 3221201525 in words is "three billion, two hundred twenty-one million, two hundred one thousand, five hundred twenty-five".