3225621420 has 96 divisors (see below), whose sum is σ = 11468889600. Its totient is φ = 737284032.

The previous prime is 3225621419. The next prime is 3225621437. The reversal of 3225621420 is 241265223.

It is a happy number.

3225621420 is a `hidden beast` number, since 32 + 2 + 5 + 621 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422890 + ... + 430449.

It is an arithmetic number, because the mean of its divisors is an integer number (119467600).

Almost surely, 2^3225621420 is an apocalyptic number.

3225621420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3225621420 is an abundant number, since it is smaller than the sum of its proper divisors (8243268180).

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

3225621420 is a wasteful number, since it uses less digits than its factorization.

3225621420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853364 (or 853356 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 3225621420 is about 56794.5544924863. The cubic root of 3225621420 is about 1477.5350709292.

Adding to 3225621420 its reverse (241265223), we get a palindrome (3466886643).

The spelling of 3225621420 in words is "three billion, two hundred twenty-five million, six hundred twenty-one thousand, four hundred twenty".