2528975449 has 32 divisors (see below), whose sum is σ = 3574287360. Its totient is φ = 1723291200.

The previous prime is 2528975441. The next prime is 2528975453. The reversal of 2528975449 is 9445798252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2528975449 - 2³ = 2528975441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2528975449.

It is not an unprimeable number, because it can be changed into a prime (2528975441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47467 + ... + 85504.

It is an arithmetic number, because the mean of its divisors is an integer number (111696480).

Almost surely, 2^2528975449 is an apocalyptic number.

It is an amenable number.

2528975449 is a deficient number, since it is larger than the sum of its proper divisors (1045311911).

2528975449 is a wasteful number, since it uses less digits than its factorization.

2528975449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133021.

The product of its digits is 7257600, while the sum is 55.

The square root of 2528975449 is about 50288.9197438163. The cubic root of 2528975449 is about 1362.4321115797.

It can be divided in two parts, 25289 and 75449, that multiplied together give a 4-th power (1908029761 = 209⁴).

The spelling of 2528975449 in words is "two billion, five hundred twenty-eight million, nine hundred seventy-five thousand, four hundred forty-nine".