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325442221 = 1325034017
BaseRepresentation
bin10011011001011…
…101101010101101
3211200101011210121
4103121131222231
51131303122341
652143204541
711031133066
oct2331355255
9750334717
10325442221
11157781615
1290ba6751
1352568380
143131756d
151d8874d1
hex1365daad

325442221 has 4 divisors (see below), whose sum is σ = 350476252. Its totient is φ = 300408192.

The previous prime is 325442219. The next prime is 325442231. The reversal of 325442221 is 122244523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122244523 = 139879457.

It can be written as a sum of positive squares in 2 ways, for example, as 31696900 + 293745321 = 5630^2 + 17139^2 .

It is a cyclic number.

It is not a de Polignac number, because 325442221 - 21 = 325442219 is a prime.

It is a super-3 number, since 3×3254422213 (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325442231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12516996 + ... + 12517021.

It is an arithmetic number, because the mean of its divisors is an integer number (87619063).

Almost surely, 2325442221 is an apocalyptic number.

It is an amenable number.

325442221 is a deficient number, since it is larger than the sum of its proper divisors (25034031).

325442221 is a wasteful number, since it uses less digits than its factorization.

325442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25034030.

The product of its digits is 3840, while the sum is 25.

The square root of 325442221 is about 18040.0172117435. The cubic root of 325442221 is about 687.8461303243.

Adding to 325442221 its reverse (122244523), we get a palindrome (447686744).

The spelling of 325442221 in words is "three hundred twenty-five million, four hundred forty-two thousand, two hundred twenty-one".

Divisors: 1 13 25034017 325442221