2577521225 has 12 divisors (see below), whose sum is σ = 3197462016. Its totient is φ = 2061155280.

The previous prime is 2577521207. The next prime is 2577521231. The reversal of 2577521225 is 5221257752.

It is a happy number.

It is not a de Polignac number, because 2577521225 - 2¹⁸ = 2577259081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43304 + ... + 83846.

It is an arithmetic number, because the mean of its divisors is an integer number (266455168).

Almost surely, 2^2577521225 is an apocalyptic number.

2577521225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2577521225 is a deficient number, since it is larger than the sum of its proper divisors (619940791).

2577521225 is a wasteful number, since it uses less digits than its factorization.

2577521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43096 (or 43091 counting only the distinct ones).

The product of its digits is 98000, while the sum is 38.

The square root of 2577521225 is about 50769.2941156365. The cubic root of 2577521225 is about 1371.0945884879.

Adding to 2577521225 its reverse (5221257752), we get a palindrome (7798778977).

The spelling of 2577521225 in words is "two billion, five hundred seventy-seven million, five hundred twenty-one thousand, two hundred twenty-five".