3225217521 has 4 divisors (see below), whose sum is σ = 4300290032. Its totient is φ = 2150145012.

The previous prime is 3225217493. The next prime is 3225217531. The reversal of 3225217521 is 1257125223.

3225217521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3225217521 - 2¹³ = 3225209329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3225217531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537536251 + ... + 537536256.

It is an arithmetic number, because the mean of its divisors is an integer number (1075072508).

Almost surely, 2^3225217521 is an apocalyptic number.

It is an amenable number.

3225217521 is a deficient number, since it is larger than the sum of its proper divisors (1075072511).

3225217521 is a wasteful number, since it uses less digits than its factorization.

3225217521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075072510.

The product of its digits is 8400, while the sum is 30.

The square root of 3225217521 is about 56790.9985913261. The cubic root of 3225217521 is about 1477.4733980741.

The spelling of 3225217521 in words is "three billion, two hundred twenty-five million, two hundred seventeen thousand, five hundred twenty-one".