25528736 has 12 divisors (see below), whose sum is σ = 50259762. Its totient is φ = 12764352.

The previous prime is 25528733. The next prime is 25528739. The reversal of 25528736 is 63782552.

It is an interprime number because it is at equal distance from previous prime (25528733) and next prime (25528739).

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 12250000 = 3644^2 + 3500^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25528736.

It is not an unprimeable number, because it can be changed into a prime (25528733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398855 + ... + 398918.

Almost surely, 2^25528736 is an apocalyptic number.

It is an amenable number.

25528736 is a deficient number, since it is larger than the sum of its proper divisors (24731026).

25528736 is an equidigital number, since it uses as much as digits as its factorization.

25528736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797783 (or 797775 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 25528736 is about 5052.5969560217. The cubic root of 25528736 is about 294.4487877951.

The spelling of 25528736 in words is "twenty-five million, five hundred twenty-eight thousand, seven hundred thirty-six".