25770660 has 24 divisors (see below), whose sum is σ = 72158016. Its totient is φ = 6872160.

The previous prime is 25770643. The next prime is 25770697. The reversal of 25770660 is 6607752.

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, 214696 + ... + 214815.

It is an arithmetic number, because the mean of its divisors is an integer number (3006584).

Almost surely, 2^25770660 is an apocalyptic number.

25770660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25770660 is an abundant number, since it is smaller than the sum of its proper divisors (46387356).

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

25770660 is a wasteful number, since it uses less digits than its factorization.

25770660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429523 (or 429521 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 25770660 is about 5076.4810646746. The cubic root of 25770660 is about 295.3759833006.

The spelling of 25770660 in words is "twenty-five million, seven hundred seventy thousand, six hundred sixty".