25416220 has 24 divisors (see below), whose sum is σ = 53532864. Its totient is φ = 10136256.

The previous prime is 25416211. The next prime is 25416233. The reversal of 25416220 is 2261452.

It is a junction number, because it is equal to n+sod(n) for n = 25416191 and 25416200.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5757 + ... + 9163.

It is an arithmetic number, because the mean of its divisors is an integer number (2230536).

Almost surely, 2^25416220 is an apocalyptic number.

25416220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25416220 is an abundant number, since it is smaller than the sum of its proper divisors (28116644).

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

25416220 is a wasteful number, since it uses less digits than its factorization.

25416220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25416220 is about 5041.4501881899. The cubic root of 25416220 is about 294.0155636785.

Adding to 25416220 its reverse (2261452), we get a palindrome (27677672).

The spelling of 25416220 in words is "twenty-five million, four hundred sixteen thousand, two hundred twenty".