25550025 has 24 divisors (see below), whose sum is σ = 42393120. Its totient is φ = 13578240.

The previous prime is 25549991. The next prime is 25550027. The reversal of 25550025 is 52005552.

It is not a de Polignac number, because 25550025 - 2⁶ = 25549961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25549977 and 25550004.

It is not an unprimeable number, because it can be changed into a prime (25550027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32841 + ... + 33609.

It is an arithmetic number, because the mean of its divisors is an integer number (1766380).

Almost surely, 2^25550025 is an apocalyptic number.

25550025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25550025 is a deficient number, since it is larger than the sum of its proper divisors (16843095).

25550025 is a wasteful number, since it uses less digits than its factorization.

25550025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 25550025 is about 5054.7032553850. The cubic root of 25550025 is about 294.5306142587.

Adding to 25550025 its reverse (52005552), we get a palindrome (77555577).

The spelling of 25550025 in words is "twenty-five million, five hundred fifty thousand, twenty-five".