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10180825 = 52407233
BaseRepresentation
bin100110110101…
…100011011001
3201011020110121
4212311203121
510101241300
61002113241
7152351464
oct46654331
921136417
1010180825
115824006
1234ab821
132155c75
1414d02db
15d6181a
hex9b58d9

10180825 has 6 divisors (see below), whose sum is σ = 12624254. Its totient is φ = 8144640.

The previous prime is 10180813. The next prime is 10180831. The reversal of 10180825 is 52808101.

It can be written as a sum of positive squares in 3 ways, for example, as 112896 + 10067929 = 336^2 + 3173^2 .

It is a de Polignac number, because none of the positive numbers 2k-10180825 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 407233 = 10180825 / (1 + 0 + 1 + 8 + 0 + 8 + 2 + 5).

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 10180825.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 203592 + ... + 203641.

Almost surely, 210180825 is an apocalyptic number.

It is an amenable number.

10180825 is a deficient number, since it is larger than the sum of its proper divisors (2443429).

10180825 is an equidigital number, since it uses as much as digits as its factorization.

10180825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407243 (or 407238 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 10180825 is about 3190.7405096623. The cubic root of 10180825 is about 216.7343049839.

Adding to 10180825 its reverse (52808101), we get a palindrome (62988926).

The spelling of 10180825 in words is "ten million, one hundred eighty thousand, eight hundred twenty-five".

Divisors: 1 5 25 407233 2036165 10180825