25620125 has 16 divisors (see below), whose sum is σ = 32318832. Its totient is φ = 20275200.

The previous prime is 25620097. The next prime is 25620143. The reversal of 25620125 is 52102652.

It can be written as a sum of positive squares in 8 ways, for example, as 18335524 + 7284601 = 4282^2 + 2699^2 .

It is not a de Polignac number, because 25620125 - 2¹⁰ = 25619101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25620125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11069 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (2019927).

Almost surely, 2^25620125 is an apocalyptic number.

25620125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25620125 is a deficient number, since it is larger than the sum of its proper divisors (6698707).

25620125 is an equidigital number, since it uses as much as digits as its factorization.

25620125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25620125 is about 5061.6326417471. The cubic root of 25620125 is about 294.7997300101.

Adding to 25620125 its reverse (52102652), we get a palindrome (77722777).

The spelling of 25620125 in words is "twenty-five million, six hundred twenty thousand, one hundred twenty-five".