25775720 has 32 divisors (see below), whose sum is σ = 58212000. Its totient is φ = 10271808.

The previous prime is 25775699. The next prime is 25775731. The reversal of 25775720 is 2757752.

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, 11231 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (1819125).

Almost surely, 2^25775720 is an apocalyptic number.

25775720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25775720 is an abundant number, since it is smaller than the sum of its proper divisors (32436280).

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

25775720 is a wasteful number, since it uses less digits than its factorization.

25775720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 25775720 is about 5076.9794169368. The cubic root of 25775720 is about 295.3953141296.

The spelling of 25775720 in words is "twenty-five million, seven hundred seventy-five thousand, seven hundred twenty".