10225640 has 16 divisors (see below), whose sum is σ = 23007780. Its totient is φ = 4090240.

The previous prime is 10225609. The next prime is 10225651. The reversal of 10225640 is 4652201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9523396 + 702244 = 3086^2 + 838^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 127781 + ... + 127860.

Almost surely, 2^10225640 is an apocalyptic number.

10225640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10225640 is an abundant number, since it is smaller than the sum of its proper divisors (12782140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10225640 is a wasteful number, since it uses less digits than its factorization.

10225640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255652 (or 255648 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 10225640 is about 3197.7554628208. The cubic root of 10225640 is about 217.0518539321.

Adding to 10225640 its reverse (4652201), we get a palindrome (14877841).

The spelling of 10225640 in words is "ten million, two hundred twenty-five thousand, six hundred forty".