2521256016 has 20 divisors (see below), whose sum is σ = 6513244832. Its totient is φ = 840418656.

The previous prime is 2521256011. The next prime is 2521256033. The reversal of 2521256016 is 6106521252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521256011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26263036 + ... + 26263131.

Almost surely, 2^2521256016 is an apocalyptic number.

It is an amenable number.

2521256016 is an abundant number, since it is smaller than the sum of its proper divisors (3991988816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521256016 is a wasteful number, since it uses less digits than its factorization.

2521256016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52526178 (or 52526172 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2521256016 is about 50212.1102524082. The cubic root of 2521256016 is about 1361.0444715800.

Adding to 2521256016 its reverse (6106521252), we get a palindrome (8627777268).

The spelling of 2521256016 in words is "two billion, five hundred twenty-one million, two hundred fifty-six thousand, sixteen".