25009625 has 16 divisors (see below), whose sum is σ = 32572800. Its totient is φ = 19135600.

The previous prime is 25009613. The next prime is 25009627. The reversal of 25009625 is 52690052.

It is not a de Polignac number, because 25009625 - 2⁶ = 25009561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25009627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475 + ... + 7224.

It is an arithmetic number, because the mean of its divisors is an integer number (2035800).

Almost surely, 2^25009625 is an apocalyptic number.

25009625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25009625 is a deficient number, since it is larger than the sum of its proper divisors (7563175).

25009625 is an equidigital number, since it uses as much as digits as its factorization.

25009625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737 (or 8727 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25009625 is about 5000.9624073772. The cubic root of 25009625 is about 292.4392939009.

Adding to 25009625 its reverse (52690052), we get a palindrome (77699677).

The spelling of 25009625 in words is "twenty-five million, nine thousand, six hundred twenty-five".