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68386225 = 5219143971
BaseRepresentation
bin1000001001101…
…11110110110001
311202200101021011
410010313312301
5120001324400
610441430521
71460162515
oct404676661
9152611234
1068386225
1135669646
121aa9b441
131122512b
149122145
15600c8ba
hex4137db1

68386225 has 12 divisors (see below), whose sum is σ = 89262640. Its totient is φ = 51829200.

The previous prime is 68386183. The next prime is 68386231. The reversal of 68386225 is 52268386.

It is not a de Polignac number, because 68386225 - 221 = 66289073 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71511 + ... + 72460.

Almost surely, 268386225 is an apocalyptic number.

It is an amenable number.

68386225 is a deficient number, since it is larger than the sum of its proper divisors (20876415).

68386225 is a wasteful number, since it uses less digits than its factorization.

68386225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144000 (or 143995 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 68386225 is about 8269.5964230427. The cubic root of 68386225 is about 408.9368151029.

The spelling of 68386225 in words is "sixty-eight million, three hundred eighty-six thousand, two hundred twenty-five".

Divisors: 1 5 19 25 95 475 143971 719855 2735449 3599275 13677245 68386225