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68845025 = 5210312671
BaseRepresentation
bin1000001101001…
…11110111100001
311210112200121202
410012213313201
5120111020100
610455330545
71464113234
oct406476741
9153480552
1068845025
1135952317
121b080a55
1311355c02
14920141b
15609d7d5
hex41a7de1

68845025 has 12 divisors (see below), whose sum is σ = 85482624. Its totient is φ = 55002000.

The previous prime is 68845013. The next prime is 68845031. The reversal of 68845025 is 52054886.

It is not a de Polignac number, because 68845025 - 210 = 68844001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68845025.

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, 24440 + ... + 27110.

It is an arithmetic number, because the mean of its divisors is an integer number (7123552).

Almost surely, 268845025 is an apocalyptic number.

It is an amenable number.

68845025 is a deficient number, since it is larger than the sum of its proper divisors (16637599).

68845025 is a wasteful number, since it uses less digits than its factorization.

68845025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 68845025 is about 8297.2902203069. The cubic root of 68845025 is about 409.8492902358.

The spelling of 68845025 in words is "sixty-eight million, eight hundred forty-five thousand, twenty-five".

Divisors: 1 5 25 1031 2671 5155 13355 25775 66775 2753801 13769005 68845025