325806505 has 4 divisors (see below), whose sum is σ = 390967812. Its totient is φ = 260645200.

The previous prime is 325806499. The next prime is 325806521. The reversal of 325806505 is 505608523.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 240281001 + 85525504 = 15501^2 + 9248^2 .

It is not a de Polignac number, because 325806505 - 2²⁵ = 292252073 is a prime.

It is a super-2 number, since 2×325806505² = 212299757400630050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32580646 + ... + 32580655.

It is an arithmetic number, because the mean of its divisors is an integer number (97741953).

Almost surely, 2^325806505 is an apocalyptic number.

It is an amenable number.

325806505 is a deficient number, since it is larger than the sum of its proper divisors (65161307).

325806505 is an equidigital number, since it uses as much as digits as its factorization.

325806505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65161306.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 325806505 is about 18050.1109414873. The cubic root of 325806505 is about 688.1026816558.

The spelling of 325806505 in words is "three hundred twenty-five million, eight hundred six thousand, five hundred five".