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10280525 = 521732377
BaseRepresentation
bin100111001101…
…111001001101
3201100022020012
4213031321031
510112434100
61004203005
7153245243
oct47157115
921308205
1010280525
115891a02
123539465
13218c468
141518793
15d81135
hex9cde4d

10280525 has 12 divisors (see below), whose sum is σ = 12826932. Its totient is φ = 8173440.

The previous prime is 10280521. The next prime is 10280527. The reversal of 10280525 is 52508201.

It can be written as a sum of positive squares in 6 ways, for example, as 21316 + 10259209 = 146^2 + 3203^2 .

It is not a de Polignac number, because 10280525 - 22 = 10280521 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 10280525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10280521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3137 + ... + 5513.

It is an arithmetic number, because the mean of its divisors is an integer number (1068911).

Almost surely, 210280525 is an apocalyptic number.

It is an amenable number.

10280525 is a deficient number, since it is larger than the sum of its proper divisors (2546407).

10280525 is a wasteful number, since it uses less digits than its factorization.

10280525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 10280525 is about 3206.3257788316. The cubic root of 10280525 is about 217.4394952149.

Adding to 10280525 its reverse (52508201), we get a palindrome (62788726).

The spelling of 10280525 in words is "ten million, two hundred eighty thousand, five hundred twenty-five".

Divisors: 1 5 25 173 865 2377 4325 11885 59425 411221 2056105 10280525