25411520 has 28 divisors (see below), whose sum is σ = 60511944. Its totient is φ = 10164480.

The previous prime is 25411501. The next prime is 25411523. The reversal of 25411520 is 2511452.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25411492 and 25411501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25411523) 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 3 ways as a sum of consecutive naturals, for example, 39386 + ... + 40025.

Almost surely, 2^25411520 is an apocalyptic number.

25411520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25411520 is an abundant number, since it is smaller than the sum of its proper divisors (35100424).

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

25411520 is an equidigital number, since it uses as much as digits as its factorization.

25411520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79428 (or 79418 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25411520 is about 5040.9840309209. The cubic root of 25411520 is about 293.9974393162.

Adding to 25411520 its reverse (2511452), we get a palindrome (27922972).

The spelling of 25411520 in words is "twenty-five million, four hundred eleven thousand, five hundred twenty".