25755820 has 24 divisors (see below), whose sum is σ = 54329184. Its totient is φ = 10256256.

The previous prime is 25755803. The next prime is 25755841. The reversal of 25755820 is 2855752.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (2263716).

Almost surely, 2^25755820 is an apocalyptic number.

25755820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25755820 is an abundant number, since it is smaller than the sum of its proper divisors (28573364).

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

25755820 is a wasteful number, since it uses less digits than its factorization.

25755820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769 (or 5767 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 25755820 is about 5075.0192117863. The cubic root of 25755820 is about 295.3192751261.

The spelling of 25755820 in words is "twenty-five million, seven hundred fifty-five thousand, eight hundred twenty".