3221250245 has 4 divisors (see below), whose sum is σ = 3865500300. Its totient is φ = 2577000192.

The previous prime is 3221250223. The next prime is 3221250251. The reversal of 3221250245 is 5420521223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5420521223 = 13 ⋅416963171.

It can be written as a sum of positive squares in 2 ways, for example, as 1483944484 + 1737305761 = 38522^2 + 41681^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221250245 - 2¹⁰ = 3221249221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322125020 + ... + 322125029.

It is an arithmetic number, because the mean of its divisors is an integer number (966375075).

Almost surely, 2^3221250245 is an apocalyptic number.

It is an amenable number.

3221250245 is a deficient number, since it is larger than the sum of its proper divisors (644250055).

3221250245 is an equidigital number, since it uses as much as digits as its factorization.

3221250245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644250054.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 3221250245 is about 56756.0591038525. The cubic root of 3221250245 is about 1476.8673459501.

Adding to 3221250245 its reverse (5420521223), we get a palindrome (8641771468).

The spelling of 3221250245 in words is "three billion, two hundred twenty-one million, two hundred fifty thousand, two hundred forty-five".