2521868829 has 16 divisors (see below), whose sum is σ = 3455272512. Its totient is φ = 1634905728.

The previous prime is 2521868821. The next prime is 2521868861. The reversal of 2521868829 is 9288681252.

It is not a de Polignac number, because 2521868829 - 2³ = 2521868821 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521868821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239377 + ... + 249689.

It is an arithmetic number, because the mean of its divisors is an integer number (215954532).

Almost surely, 2^2521868829 is an apocalyptic number.

It is an amenable number.

2521868829 is a deficient number, since it is larger than the sum of its proper divisors (933403683).

2521868829 is a wasteful number, since it uses less digits than its factorization.

2521868829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12556.

The product of its digits is 1105920, while the sum is 51.

The square root of 2521868829 is about 50218.2121246864. The cubic root of 2521868829 is about 1361.1547338427.

The spelling of 2521868829 in words is "two billion, five hundred twenty-one million, eight hundred sixty-eight thousand, eight hundred twenty-nine".