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325694209 = 180472

325694209 has 3 divisors (see below), whose sum is σ = 325712257. Its totient is φ = 325676162.

The previous prime is 325694207. The next prime is 325694221. The reversal of 325694209 is 902496523.

The square root of 325694209 is 18047.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 902496523 = 1947499817.

It is not a de Polignac number, because 325694209 - 21 = 325694207 is a prime.

It is a super-2 number, since 2×3256942092 = 212153435552271362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325694207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9024 + ... + 27070.

Almost surely, 2325694209 is an apocalyptic number.

325694209 is the 18047-th square number.

325694209 is the 9024-th centered octagonal number.

It is an amenable number.

325694209 is a deficient number, since it is larger than the sum of its proper divisors (18048).

325694209 is an frugal number, since it uses more digits than its factorization.

325694209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36094 (or 18047 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The cubic root of 325694209 is about 688.0236162628.

The spelling of 325694209 in words is "three hundred twenty-five million, six hundred ninety-four thousand, two hundred nine".

Divisors: 1 18047 325694209