325511165 has 12 divisors (see below), whose sum is σ = 454387356. Its totient is φ = 223207488.

The previous prime is 325511149. The next prime is 325511233. The reversal of 325511165 is 561115523.

It can be written as a sum of positive squares in 2 ways, for example, as 225870841 + 99640324 = 15029^2 + 9982^2 .

It is not a de Polignac number, because 325511165 - 2⁴ = 325511149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664064 + ... + 664553.

It is an arithmetic number, because the mean of its divisors is an integer number (37865613).

Almost surely, 2^325511165 is an apocalyptic number.

325511165 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

325511165 is a deficient number, since it is larger than the sum of its proper divisors (128876191).

325511165 is a wasteful number, since it uses less digits than its factorization.

325511165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328636 (or 1328629 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 325511165 is about 18041.9279734733. The cubic root of 325511165 is about 687.8946996372.

Adding to 325511165 its reverse (561115523), we get a palindrome (886626688).

It can be divided in two parts, 3255 and 11165, that multiplied together give a triangular number (36342075 = T₈₅₂₅).

The spelling of 325511165 in words is "three hundred twenty-five million, five hundred eleven thousand, one hundred sixty-five".