3283720625165 has 8 divisors (see below), whose sum is σ = 3941068322040. Its totient is φ = 2626574118912.

The previous prime is 3283720625161. The next prime is 3283720625183. The reversal of 3283720625165 is 5615260273823.

It can be written as a sum of positive squares in 4 ways, for example, as 310903262569 + 2972817362596 = 557587^2 + 1724186^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3283720625165 - 2² = 3283720625161 is a prime.

It is a super-2 number, since 2×3283720625165² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3283720625161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50261744 + ... + 50327033.

It is an arithmetic number, because the mean of its divisors is an integer number (492633540255).

Almost surely, 2^{3283720625165} is an apocalyptic number.

It is an amenable number.

3283720625165 is a deficient number, since it is larger than the sum of its proper divisors (657347696875).

3283720625165 is a wasteful number, since it uses less digits than its factorization.

3283720625165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100595311.

The product of its (nonzero) digits is 3628800, while the sum is 50.

Adding to 3283720625165 its reverse (5615260273823), we get a palindrome (8898980898988).

The spelling of 3283720625165 in words is "three trillion, two hundred eighty-three billion, seven hundred twenty million, six hundred twenty-five thousand, one hundred sixty-five".