2516210525 has 6 divisors (see below), whose sum is σ = 3120101082. Its totient is φ = 2012968400.

The previous prime is 2516210509. The next prime is 2516210539. The reversal of 2516210525 is 5250126152.

It can be written as a sum of positive squares in 3 ways, for example, as 524730649 + 1991479876 = 22907^2 + 44626^2 .

It is not a de Polignac number, because 2516210525 - 2⁴ = 2516210509 is a prime.

It is a super-2 number, since 2×2516210525² = 12662630812241551250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50324186 + ... + 50324235.

It is an arithmetic number, because the mean of its divisors is an integer number (520016847).

Almost surely, 2^2516210525 is an apocalyptic number.

2516210525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2516210525 is a deficient number, since it is larger than the sum of its proper divisors (603890557).

2516210525 is a wasteful number, since it uses less digits than its factorization.

2516210525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100648431 (or 100648426 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2516210525 is about 50161.8433174061. The cubic root of 2516210525 is about 1360.1359662578.

Adding to 2516210525 its reverse (5250126152), we get a palindrome (7766336677).

The spelling of 2516210525 in words is "two billion, five hundred sixteen million, two hundred ten thousand, five hundred twenty-five".