10405225 has 12 divisors (see below), whose sum is σ = 13147596. Its totient is φ = 8166080.

The previous prime is 10405211. The next prime is 10405247. The reversal of 10405225 is 52250401.

It can be written as a sum of positive squares in 6 ways, for example, as 1212201 + 9193024 = 1101^2 + 3032^2 .

It is not a de Polignac number, because 10405225 - 2⁵ = 10405193 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 2602 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (1095633).

Almost surely, 2^10405225 is an apocalyptic number.

It is an amenable number.

10405225 is a deficient number, since it is larger than the sum of its proper divisors (2742371).

10405225 is an equidigital number, since it uses as much as digits as its factorization.

10405225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916 (or 7911 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 10405225 is about 3225.7130994557. The cubic root of 10405225 is about 218.3151251577.

Adding to 10405225 its reverse (52250401), we get a palindrome (62655626).

The spelling of 10405225 in words is "ten million, four hundred five thousand, two hundred twenty-five".