25561366 has 8 divisors (see below), whose sum is σ = 38385144. Its totient is φ = 12766320.

The previous prime is 25561357. The next prime is 25561369. The reversal of 25561366 is 66316552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25561369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (4798143).

Almost surely, 2^25561366 is an apocalyptic number.

25561366 is a deficient number, since it is larger than the sum of its proper divisors (12823778).

25561366 is a wasteful number, since it uses less digits than its factorization.

25561366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14366.

The product of its digits is 32400, while the sum is 34.

The square root of 25561366 is about 5055.8249574130. The cubic root of 25561366 is about 294.5741860047.

The spelling of 25561366 in words is "twenty-five million, five hundred sixty-one thousand, three hundred sixty-six".