25643325 has 12 divisors (see below), whose sum is σ = 42397088. Its totient is φ = 13676400.

The previous prime is 25643311. The next prime is 25643329. The reversal of 25643325 is 52334652.

It is not a de Polignac number, because 25643325 - 2⁸ = 25643069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25643292 and 25643301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25643329) 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 11 ways as a sum of consecutive naturals, for example, 170881 + ... + 171030.

Almost surely, 2^25643325 is an apocalyptic number.

25643325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25643325 is a deficient number, since it is larger than the sum of its proper divisors (16753763).

25643325 is a wasteful number, since it uses less digits than its factorization.

25643325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341924 (or 341919 counting only the distinct ones).

The product of its digits is 21600, while the sum is 30.

The square root of 25643325 is about 5063.9238738354. The cubic root of 25643325 is about 294.8886872959. Note that the first 3 decimals are identical.

Adding to 25643325 its reverse (52334652), we get a palindrome (77977977).

The spelling of 25643325 in words is "twenty-five million, six hundred forty-three thousand, three hundred twenty-five".