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76680025 = 5213812221
BaseRepresentation
bin1001001001000…
…00101101011001
312100021202012221
410210200231121
5124112230100
611335304041
71620524632
oct444405531
9170252187
1076680025
113a313924
122181b021
1312b6a1c6
14a280889
156aea01a
hex4920b59

76680025 has 12 divisors (see below), whose sum is σ = 95194924. Its totient is φ = 61272000.

The previous prime is 76680011. The next prime is 76680041. The reversal of 76680025 is 52008667.

It can be written as a sum of positive squares in 6 ways, for example, as 414736 + 76265289 = 644^2 + 8733^2 .

It is not a de Polignac number, because 76680025 - 223 = 68291417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33415 + ... + 35635.

Almost surely, 276680025 is an apocalyptic number.

It is an amenable number.

76680025 is a deficient number, since it is larger than the sum of its proper divisors (18514899).

76680025 is a wasteful number, since it uses less digits than its factorization.

76680025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 76680025 is about 8756.7131390722. The cubic root of 76680025 is about 424.8419712355.

The spelling of 76680025 in words is "seventy-six million, six hundred eighty thousand, twenty-five".

Divisors: 1 5 25 1381 2221 6905 11105 34525 55525 3067201 15336005 76680025