25676820 has 72 divisors (see below), whose sum is σ = 83885256. Its totient is φ = 6319872.

The previous prime is 25676813. The next prime is 25676831. The reversal of 25676820 is 2867652.

It can be written as a sum of positive squares in 4 ways, for example, as 636804 + 25040016 = 798^2 + 5004^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 3147 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (1165073).

Almost surely, 2^25676820 is an apocalyptic number.

25676820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25676820 is an abundant number, since it is smaller than the sum of its proper divisors (58208436).

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

25676820 is a wasteful number, since it uses less digits than its factorization.

25676820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001 (or 10996 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 25676820 is about 5067.2300125414. The cubic root of 25676820 is about 295.0170247763.

The spelling of 25676820 in words is "twenty-five million, six hundred seventy-six thousand, eight hundred twenty".