25525666 has 8 divisors (see below), whose sum is σ = 38660544. Its totient is φ = 12638820.

The previous prime is 25525663. The next prime is 25525673. The reversal of 25525666 is 66652552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25525663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61750 + ... + 62161.

It is an arithmetic number, because the mean of its divisors is an integer number (4832568).

Almost surely, 2^25525666 is an apocalyptic number.

25525666 is a deficient number, since it is larger than the sum of its proper divisors (13134878).

25525666 is a wasteful number, since it uses less digits than its factorization.

25525666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124016.

The product of its digits is 108000, while the sum is 37.

The square root of 25525666 is about 5052.2931427224. The cubic root of 25525666 is about 294.4369841813.

It can be divided in two parts, 255 and 25666, that added together give a square (25921 = 161²).

The spelling of 25525666 in words is "twenty-five million, five hundred twenty-five thousand, six hundred sixty-six".