10420825 has 6 divisors (see below), whose sum is σ = 12921854. Its totient is φ = 8336640.

The previous prime is 10420801. The next prime is 10420829. The reversal of 10420825 is 52802401.

It can be written as a sum of positive squares in 3 ways, for example, as 841 + 10419984 = 29^2 + 3228^2 .

It is not a de Polignac number, because 10420825 - 2⁹ = 10420313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10420796 and 10420805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420829) 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 5 ways as a sum of consecutive naturals, for example, 208392 + ... + 208441.

Almost surely, 2^10420825 is an apocalyptic number.

It is an amenable number.

10420825 is a deficient number, since it is larger than the sum of its proper divisors (2501029).

10420825 is an equidigital number, since it uses as much as digits as its factorization.

10420825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416843 (or 416838 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 10420825 is about 3228.1302637905. The cubic root of 10420825 is about 218.4241734280.

The spelling of 10420825 in words is "ten million, four hundred twenty thousand, eight hundred twenty-five".