325256261 has 4 divisors (see below), whose sum is σ = 354825024. Its totient is φ = 295687500.

The previous prime is 325256227. The next prime is 325256273. The reversal of 325256261 is 162652523.

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, and also an emirpimes, since its reverse is a distinct semiprime: 162652523 = 11 ⋅14786593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325256261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325256161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14784365 + ... + 14784386.

It is an arithmetic number, because the mean of its divisors is an integer number (88706256).

Almost surely, 2^325256261 is an apocalyptic number.

It is an amenable number.

325256261 is a deficient number, since it is larger than the sum of its proper divisors (29568763).

325256261 is a wasteful number, since it uses less digits than its factorization.

325256261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29568762.

The product of its digits is 21600, while the sum is 32.

The square root of 325256261 is about 18034.8623781830. The cubic root of 325256261 is about 687.7150919718.

The spelling of 325256261 in words is "three hundred twenty-five million, two hundred fifty-six thousand, two hundred sixty-one".