25320025 has 24 divisors (see below), whose sum is σ = 33323264. Its totient is φ = 19051200.

The previous prime is 25320013. The next prime is 25320041. The reversal of 25320025 is 52002352.

It is not a de Polignac number, because 25320025 - 2⁹ = 25319513 is a prime.

It is a super-2 number, since 2×25320025² = 1282207332001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25319984 and 25320011.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28234 + ... + 29116.

Almost surely, 2^25320025 is an apocalyptic number.

25320025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25320025 is a deficient number, since it is larger than the sum of its proper divisors (8003239).

25320025 is a wasteful number, since it uses less digits than its factorization.

25320025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25320025 is about 5031.9007343150. The cubic root of 25320025 is about 293.6441658879.

Adding to 25320025 its reverse (52002352), we get a palindrome (77322377).

The spelling of 25320025 in words is "twenty-five million, three hundred twenty thousand, twenty-five".