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11281825 = 52593761
BaseRepresentation
bin101011000010…
…010110100001
3210020011202101
4223002112201
510342004300
61041450401
7164615422
oct53022641
923204671
1011281825
116406225
123940a01
132450149
1416d9649
15eccb6a
hexac25a1

11281825 has 12 divisors (see below), whose sum is σ = 14031468. Its totient is φ = 8998400.

The previous prime is 11281819. The next prime is 11281843. The reversal of 11281825 is 52818211.

It can be written as a sum of positive squares in 6 ways, for example, as 2143296 + 9138529 = 1464^2 + 3023^2 .

It is not a de Polignac number, because 11281825 - 23 = 11281817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11281793 and 11281802.

It is a congruent number.

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, 14445 + ... + 15205.

It is an arithmetic number, because the mean of its divisors is an integer number (1169289).

Almost surely, 211281825 is an apocalyptic number.

It is an amenable number.

11281825 is a deficient number, since it is larger than the sum of its proper divisors (2749643).

11281825 is an equidigital number, since it uses as much as digits as its factorization.

11281825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1359 counting only the distinct ones).

The product of its digits is 1280, while the sum is 28.

The square root of 11281825 is about 3358.8428066821. The cubic root of 11281825 is about 224.2813283367.

The spelling of 11281825 in words is "eleven million, two hundred eighty-one thousand, eight hundred twenty-five".

Divisors: 1 5 25 593 761 2965 3805 14825 19025 451273 2256365 11281825