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68235625 = 54432539
BaseRepresentation
bin1000001000100…
…11000101101001
311202101201200101
410010103011221
5114432020000
610434305401
71455664453
oct404230551
9152351611
1068235625
1135576487
121aa28261
13111a1713
1490c32d3
155ecce6a
hex4113169

68235625 has 20 divisors (see below), whose sum is σ = 87284560. Its totient is φ = 53298000.

The previous prime is 68235623. The next prime is 68235649. The reversal of 68235625 is 52653286.

It is a happy number.

It is not a de Polignac number, because 68235625 - 21 = 68235623 is a prime.

It is a super-2 number, since 2×682356252 = 9312201038281250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68235623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25606 + ... + 28144.

It is an arithmetic number, because the mean of its divisors is an integer number (4364228).

Almost surely, 268235625 is an apocalyptic number.

It is an amenable number.

68235625 is a deficient number, since it is larger than the sum of its proper divisors (19048935).

68235625 is an equidigital number, since it uses as much as digits as its factorization.

68235625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2587 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 68235625 is about 8260.4857605349. The cubic root of 68235625 is about 408.6364078798.

The spelling of 68235625 in words is "sixty-eight million, two hundred thirty-five thousand, six hundred twenty-five".

Divisors: 1 5 25 43 125 215 625 1075 2539 5375 12695 26875 63475 109177 317375 545885 1586875 2729425 13647125 68235625