2521616325 has 24 divisors (see below), whose sum is σ = 4187306400. Its totient is φ = 1338980160.

The previous prime is 2521616309. The next prime is 2521616327. The reversal of 2521616325 is 5236161252.

It is not a de Polignac number, because 2521616325 - 2⁴ = 2521616309 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521616327) 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 23 ways as a sum of consecutive naturals, for example, 56235 + ... + 90584.

It is an arithmetic number, because the mean of its divisors is an integer number (174471100).

Almost surely, 2^2521616325 is an apocalyptic number.

2521616325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521616325 is a deficient number, since it is larger than the sum of its proper divisors (1665690075).

2521616325 is a wasteful number, since it uses less digits than its factorization.

2521616325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147061 (or 147056 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 2521616325 is about 50215.6979937549. The cubic root of 2521616325 is about 1361.1093034483.

Adding to 2521616325 its reverse (5236161252), we get a palindrome (7757777577).

The spelling of 2521616325 in words is "two billion, five hundred twenty-one million, six hundred sixteen thousand, three hundred twenty-five".