10225521 has 10 divisors (see below), whose sum is σ = 15275282. Its totient is φ = 6816960.

The previous prime is 10225519. The next prime is 10225561. The reversal of 10225521 is 12552201.

It can be written as a sum of positive squares in only one way, i.e., 6305121 + 3920400 = 2511^2 + 1980^2 .

It is not a de Polignac number, because 10225521 - 2¹ = 10225519 is a prime.

It is a super-2 number, since 2×10225521² = 209122559442882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10225494 and 10225503.

It is not an unprimeable number, because it can be changed into a prime (10225561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63040 + ... + 63201.

Almost surely, 2^10225521 is an apocalyptic number.

It is an amenable number.

10225521 is a deficient number, since it is larger than the sum of its proper divisors (5049761).

10225521 is an equidigital number, since it uses as much as digits as its factorization.

10225521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126253 (or 126244 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 10225521 is about 3197.7368559655. The cubic root of 10225521 is about 217.0510119548.

Adding to 10225521 its reverse (12552201), we get a palindrome (22777722).

The spelling of 10225521 in words is "ten million, two hundred twenty-five thousand, five hundred twenty-one".