25206825 has 72 divisors (see below), whose sum is σ = 51172320. Its totient is φ = 10916640.

The previous prime is 25206803. The next prime is 25206871. The reversal of 25206825 is 52860252.

It is not a de Polignac number, because 25206825 - 2⁵ = 25206793 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25206792 and 25206801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1326666 + ... + 1326684.

Almost surely, 2^25206825 is an apocalyptic number.

25206825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25206825 is an abundant number, since it is smaller than the sum of its proper divisors (25965495).

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

25206825 is an equidigital number, since it uses as much as digits as its factorization.

25206825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25206825 is about 5020.6398994550. The cubic root of 25206825 is about 293.2059069751.

The spelling of 25206825 in words is "twenty-five million, two hundred six thousand, eight hundred twenty-five".