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225087985 = 579569843
BaseRepresentation
bin11010110101010…
…01000111110001
3120200112122200001
431122221013301
5430110303420
634200230001
75402134123
oct1532510761
9520478601
10225087985
11106068a31
126346b301
133782c575
1421c73213
1514b62b0a
hexd6a91f1

225087985 has 8 divisors (see below), whose sum is σ = 273525120. Its totient is φ = 177790704.

The previous prime is 225087923. The next prime is 225088001. The reversal of 225087985 is 589780522.

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 225087985 - 213 = 225079793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284527 + ... + 285316.

It is an arithmetic number, because the mean of its divisors is an integer number (34190640).

Almost surely, 2225087985 is an apocalyptic number.

It is an amenable number.

225087985 is a deficient number, since it is larger than the sum of its proper divisors (48437135).

225087985 is an equidigital number, since it uses as much as digits as its factorization.

225087985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569927.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 225087985 is about 15002.9325466723. The cubic root of 225087985 is about 608.2994696022.

The spelling of 225087985 in words is "two hundred twenty-five million, eighty-seven thousand, nine hundred eighty-five".

Divisors: 1 5 79 395 569843 2849215 45017597 225087985