2516378125 has 12 divisors (see below), whose sum is σ = 3145275252. Its totient is φ = 2013100000.

The previous prime is 2516378113. The next prime is 2516378173. The reversal of 2516378125 is 5218736152.

It can be written as a sum of positive squares in 6 ways, for example, as 2510911881 + 5466244 = 50109^2 + 2338^2 .

It is not a de Polignac number, because 2516378125 - 2¹¹ = 2516376077 is a prime.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399496 + ... + 405745.

It is an arithmetic number, because the mean of its divisors is an integer number (262106271).

Almost surely, 2^2516378125 is an apocalyptic number.

2516378125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2516378125 is a deficient number, since it is larger than the sum of its proper divisors (628897127).

2516378125 is an frugal number, since it uses more digits than its factorization.

2516378125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805266 (or 805246 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 2516378125 is about 50163.5138821036. The cubic root of 2516378125 is about 1360.1661642777.

The spelling of 2516378125 in words is "two billion, five hundred sixteen million, three hundred seventy-eight thousand, one hundred twenty-five".