25224625 has 8 divisors (see below), whose sum is σ = 31480488. Its totient is φ = 20179600.

The previous prime is 25224623. The next prime is 25224637. The reversal of 25224625 is 52642252.

It can be written as a sum of positive squares in 4 ways, for example, as 553536 + 24671089 = 744^2 + 4967^2 .

It is not a de Polignac number, because 25224625 - 2¹ = 25224623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25224593 and 25224602.

It is not an unprimeable number, because it can be changed into a prime (25224623) 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 7 ways as a sum of consecutive naturals, for example, 100774 + ... + 101023.

It is an arithmetic number, because the mean of its divisors is an integer number (3935061).

Almost surely, 2^25224625 is an apocalyptic number.

25224625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25224625 is a deficient number, since it is larger than the sum of its proper divisors (6255863).

25224625 is an equidigital number, since it uses as much as digits as its factorization.

25224625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201812 (or 201802 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 25224625 is about 5022.4122690197. The cubic root of 25224625 is about 293.2749072971.

Adding to 25224625 its reverse (52642252), we get a palindrome (77866877).

The spelling of 25224625 in words is "twenty-five million, two hundred twenty-four thousand, six hundred twenty-five".