25080820 has 24 divisors (see below), whose sum is σ = 54094824. Its totient is φ = 9760896.

The previous prime is 25080799. The next prime is 25080827. The reversal of 25080820 is 2808052.

It can be written as a sum of positive squares in 4 ways, for example, as 10010896 + 15069924 = 3164^2 + 3882^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25080827) 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 7 ways as a sum of consecutive naturals, for example, 16207 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (2253951).

Almost surely, 2^25080820 is an apocalyptic number.

25080820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25080820 is an abundant number, since it is smaller than the sum of its proper divisors (29014004).

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

25080820 is a wasteful number, since it uses less digits than its factorization.

25080820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33939 (or 33937 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 25080820 is about 5008.0754786644. The cubic root of 25080820 is about 292.7165270380.

Adding to 25080820 its reverse (2808052), we get a palindrome (27888872).

The spelling of 25080820 in words is "twenty-five million, eighty thousand, eight hundred twenty".