25725566 has 8 divisors (see below), whose sum is σ = 38639160. Its totient is φ = 12845848.

The previous prime is 25725559. The next prime is 25725571. The reversal of 25725566 is 66552752.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (4829895).

Almost surely, 2^25725566 is an apocalyptic number.

25725566 is a deficient number, since it is larger than the sum of its proper divisors (12913594).

25725566 is a wasteful number, since it uses less digits than its factorization.

25725566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938.

The product of its digits is 126000, while the sum is 38.

The square root of 25725566 is about 5072.0376575889. The cubic root of 25725566 is about 295.2035978415.

The spelling of 25725566 in words is "twenty-five million, seven hundred twenty-five thousand, five hundred sixty-six".