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89208025 = 5218892
BaseRepresentation
bin1010101000100…
…11010011011001
320012212020101221
411110103103121
5140314124100
612504012041
72132153464
oct524232331
9205766357
1089208025
11463a0345
1225a61021
131563561a
14bbc22db
157c7201a
hex55134d9

89208025 has 9 divisors (see below), whose sum is σ = 110676541. Its totient is φ = 71328640.

The previous prime is 89208019. The next prime is 89208029. The reversal of 89208025 is 52080298.

The square root of 89208025 is 9445.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2271049 + 86936976 = 1507^2 + 9324^2 .

It is not a de Polignac number, because 89208025 - 27 = 89207897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89208029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46281 + ... + 48169.

Almost surely, 289208025 is an apocalyptic number.

89208025 is the 9445-th square number.

89208025 is the 4723-rd centered octagonal number.

It is an amenable number.

89208025 is a deficient number, since it is larger than the sum of its proper divisors (21468516).

89208025 is an frugal number, since it uses more digits than its factorization.

89208025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The cubic root of 89208025 is about 446.8220960404.

The spelling of 89208025 in words is "eighty-nine million, two hundred eight thousand, twenty-five".

Divisors: 1 5 25 1889 9445 47225 3568321 17841605 89208025