25471040 has 112 divisors (see below), whose sum is σ = 70664832. Its totient is φ = 8564736.

The previous prime is 25471021. The next prime is 25471073. The reversal of 25471040 is 4017452.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 25470997 and 25471015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185852 + ... + 185988.

It is an arithmetic number, because the mean of its divisors is an integer number (630936).

Almost surely, 2^25471040 is an apocalyptic number.

25471040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25471040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35332416).

25471040 is an abundant number, since it is smaller than the sum of its proper divisors (45193792).

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

25471040 is a wasteful number, since it uses less digits than its factorization.

25471040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 25471040 is about 5046.8841872981. The cubic root of 25471040 is about 294.2267983266.

Adding to 25471040 its reverse (4017452), we get a palindrome (29488492).

The spelling of 25471040 in words is "twenty-five million, four hundred seventy-one thousand, forty".