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70525165 = 552127073
BaseRepresentation
bin1000011010000…
…10000011101101
311220201001100011
410031002003231
5121023301130
610555333221
71514311504
oct415020355
9156631304
1070525165
113689a667
121b751211
13117c3889
14951b83b
1562d152a
hex43420ed

70525165 has 8 divisors (see below), whose sum is σ = 84795768. Its totient is φ = 56309760.

The previous prime is 70525151. The next prime is 70525181. The reversal of 70525165 is 56152507.

It can be written as a sum of positive squares in 4 ways, for example, as 3104644 + 67420521 = 1762^2 + 8211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70525165 - 213 = 70516973 is a prime.

It is a super-3 number, since 3×705251653 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 10932 + ... + 16141.

It is an arithmetic number, because the mean of its divisors is an integer number (10599471).

Almost surely, 270525165 is an apocalyptic number.

It is an amenable number.

70525165 is a deficient number, since it is larger than the sum of its proper divisors (14270603).

70525165 is a wasteful number, since it uses less digits than its factorization.

70525165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27599.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 70525165 is about 8397.9262321123. The cubic root of 70525165 is about 413.1566083876.

The spelling of 70525165 in words is "seventy million, five hundred twenty-five thousand, one hundred sixty-five".

Divisors: 1 5 521 2605 27073 135365 14105033 70525165