3225121700 has 72 divisors (see below), whose sum is σ = 7093374120. Its totient is φ = 1272678400.

The previous prime is 3225121681. The next prime is 3225121721. The reversal of 3225121700 is 71215223.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 2407276096 + 817845604 = 49064^2 + 28598^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3039170 + ... + 3040230.

It is an arithmetic number, because the mean of its divisors is an integer number (98519085).

Almost surely, 2^3225121700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3225121700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3546687060).

3225121700 is an abundant number, since it is smaller than the sum of its proper divisors (3868252420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3225121700 is a wasteful number, since it uses less digits than its factorization.

3225121700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 3225121700 is about 56790.1549566472. The cubic root of 3225121700 is about 1477.4587660501.

Adding to 3225121700 its reverse (71215223), we get a palindrome (3296336923).

The spelling of 3225121700 in words is "three billion, two hundred twenty-five million, one hundred twenty-one thousand, seven hundred".