3228220725625 has 45 divisors (see below), whose sum is σ = 4693051452969. Its totient is φ = 2213421462000.

The previous prime is 3228220725607. The next prime is 3228220725707. The reversal of 3228220725625 is 5265270228223.

The square root of 3228220725625 is 1796725.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 253092504889 + 2975128220736 = 503083^2 + 1724856^2 .

It is not a de Polignac number, because 3228220725625 - 2⁵ = 3228220725593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 314421742 + ... + 314432008.

Almost surely, 2^{3228220725625} is an apocalyptic number.

3228220725625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3228220725625 is the 1796725-th square number.

3228220725625 is the 898363-rd centered octagonal number.

It is an amenable number.

3228220725625 is a deficient number, since it is larger than the sum of its proper divisors (1464830727344).

3228220725625 is an frugal number, since it uses more digits than its factorization.

3228220725625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20568 (or 10279 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 3228220725625 in words is "three trillion, two hundred twenty-eight billion, two hundred twenty million, seven hundred twenty-five thousand, six hundred twenty-five".