2525728 has 12 divisors (see below), whose sum is σ = 4972590. Its totient is φ = 1262848.

The previous prime is 2525717. The next prime is 2525729. The reversal of 2525728 is 8275252.

It can be written as a sum of positive squares in only one way, i.e., 1468944 + 1056784 = 1212^2 + 1028^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2525728.

It is not an unprimeable number, because it can be changed into a prime (2525729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39433 + ... + 39496.

2^2525728 is an apocalyptic number.

It is an amenable number.

2525728 is a deficient number, since it is larger than the sum of its proper divisors (2446862).

2525728 is an equidigital number, since it uses as much as digits as its factorization.

2525728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78939 (or 78931 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 2525728 is about 1589.2539130045. The cubic root of 2525728 is about 136.1848696934.

The spelling of 2525728 in words is "two million, five hundred twenty-five thousand, seven hundred twenty-eight".