25067440 has 20 divisors (see below), whose sum is σ = 58281984. Its totient is φ = 10026944.

The previous prime is 25067431. The next prime is 25067443. The reversal of 25067440 is 4476052.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 25067399 and 25067408.

It is not an unprimeable number, because it can be changed into a prime (25067443) 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 3 ways as a sum of consecutive naturals, for example, 156592 + ... + 156751.

Almost surely, 2^25067440 is an apocalyptic number.

25067440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25067440 is an abundant number, since it is smaller than the sum of its proper divisors (33214544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25067440 is a wasteful number, since it uses less digits than its factorization.

25067440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313356 (or 313350 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 25067440 is about 5006.7394579706. The cubic root of 25067440 is about 292.6644654254.

The spelling of 25067440 in words is "twenty-five million, sixty-seven thousand, four hundred forty".