3225135661 has 4 divisors (see below), whose sum is σ = 3518329824. Its totient is φ = 2931941500.

The previous prime is 3225135643. The next prime is 3225135679. The reversal of 3225135661 is 1665315223.

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 an interprime number because it is at equal distance from previous prime (3225135643) and next prime (3225135679).

It is a cyclic number.

It is not a de Polignac number, because 3225135661 - 2¹⁵ = 3225102893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3225135611) 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, 146597065 + ... + 146597086.

It is an arithmetic number, because the mean of its divisors is an integer number (879582456).

Almost surely, 2^3225135661 is an apocalyptic number.

It is an amenable number.

3225135661 is a deficient number, since it is larger than the sum of its proper divisors (293194163).

3225135661 is a wasteful number, since it uses less digits than its factorization.

3225135661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293194162.

The product of its digits is 32400, while the sum is 34.

The square root of 3225135661 is about 56790.2778739460. The cubic root of 3225135661 is about 1477.4608979357.

The spelling of 3225135661 in words is "three billion, two hundred twenty-five million, one hundred thirty-five thousand, six hundred sixty-one".