25564244 has 6 divisors (see below), whose sum is σ = 44737434. Its totient is φ = 12782120.

The previous prime is 25564237. The next prime is 25564261. The reversal of 25564244 is 44246552.

It can be written as a sum of positive squares in only one way, i.e., 20811844 + 4752400 = 4562^2 + 2180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25564244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3195527 + ... + 3195534.

It is an arithmetic number, because the mean of its divisors is an integer number (7456239).

Almost surely, 2^25564244 is an apocalyptic number.

It is an amenable number.

25564244 is a deficient number, since it is larger than the sum of its proper divisors (19173190).

25564244 is a wasteful number, since it uses less digits than its factorization.

25564244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391065 (or 6391063 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 25564244 is about 5056.1095715975. The cubic root of 25564244 is about 294.5852411349.

The spelling of 25564244 in words is "twenty-five million, five hundred sixty-four thousand, two hundred forty-four".