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225307389 = 3251299213
BaseRepresentation
bin11010110110111…
…10101011111101
3120200221210122010
431123132223331
5430134314024
634205041433
75404036566
oct1533365375
9520853563
10225307389
111061a885a
1263556279
13378a83a8
1421ccd16d
1514ba7b29
hexd6deafd

225307389 has 8 divisors (see below), whose sum is σ = 301607712. Its totient is φ = 149606000.

The previous prime is 225307387. The next prime is 225307391. The reversal of 225307389 is 983703522.

It is an interprime number because it is at equal distance from previous prime (225307387) and next prime (225307391).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225307389 - 21 = 225307387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225307387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148854 + ... + 150359.

It is an arithmetic number, because the mean of its divisors is an integer number (37700964).

Almost surely, 2225307389 is an apocalyptic number.

It is an amenable number.

225307389 is a deficient number, since it is larger than the sum of its proper divisors (76300323).

225307389 is a wasteful number, since it uses less digits than its factorization.

225307389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299467.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 225307389 is about 15010.2428028330. The cubic root of 225307389 is about 608.4970515921.

The spelling of 225307389 in words is "two hundred twenty-five million, three hundred seven thousand, three hundred eighty-nine".

Divisors: 1 3 251 753 299213 897639 75102463 225307389