25406625 has 16 divisors (see below), whose sum is σ = 42277248. Its totient is φ = 13550000.

The previous prime is 25406617. The next prime is 25406627. The reversal of 25406625 is 52660452.

It is not a de Polignac number, because 25406625 - 2³ = 25406617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25406592 and 25406601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25406627) 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 15 ways as a sum of consecutive naturals, for example, 33501 + ... + 34250.

It is an arithmetic number, because the mean of its divisors is an integer number (2642328).

Almost surely, 2^25406625 is an apocalyptic number.

25406625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25406625 is a deficient number, since it is larger than the sum of its proper divisors (16870623).

25406625 is an equidigital number, since it uses as much as digits as its factorization.

25406625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67769 (or 67759 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 25406625 is about 5040.4984872530. The cubic root of 25406625 is about 293.9785606098.

The spelling of 25406625 in words is "twenty-five million, four hundred six thousand, six hundred twenty-five".