25322420 has 24 divisors (see below), whose sum is σ = 54475848. Its totient is φ = 9881600.

The previous prime is 25322419. The next prime is 25322441. The reversal of 25322420 is 2422352.

It can be written as a sum of positive squares in 4 ways, for example, as 2835856 + 22486564 = 1684^2 + 4742^2 .

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 = 25322392 and 25322401.

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, 14621 + ... + 16260.

It is an arithmetic number, because the mean of its divisors is an integer number (2269827).

Almost surely, 2^25322420 is an apocalyptic number.

25322420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25322420 is an abundant number, since it is smaller than the sum of its proper divisors (29153428).

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

25322420 is a wasteful number, since it uses less digits than its factorization.

25322420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30931 (or 30929 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 25322420 is about 5032.1387103298. The cubic root of 25322420 is about 293.6534241147.

Adding to 25322420 its reverse (2422352), we get a palindrome (27744772).

The spelling of 25322420 in words is "twenty-five million, three hundred twenty-two thousand, four hundred twenty".