2520126505 has 16 divisors (see below), whose sum is σ = 3258060624. Its totient is φ = 1860284160.

The previous prime is 2520126487. The next prime is 2520126523. The reversal of 2520126505 is 5056210252.

It is an interprime number because it is at equal distance from previous prime (2520126487) and next prime (2520126523).

It can be written as a sum of positive squares in 8 ways, for example, as 517653504 + 2002473001 = 22752^2 + 44749^2 .

It is not a de Polignac number, because 2520126505 - 2¹¹ = 2520124457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203347 + ... + 215383.

It is an arithmetic number, because the mean of its divisors is an integer number (203628789).

Almost surely, 2^2520126505 is an apocalyptic number.

It is an amenable number.

2520126505 is a deficient number, since it is larger than the sum of its proper divisors (737934119).

2520126505 is a wasteful number, since it uses less digits than its factorization.

2520126505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15276.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2520126505 is about 50200.8615961918. The cubic root of 2520126505 is about 1360.8411940179.

Adding to 2520126505 its reverse (5056210252), we get a palindrome (7576336757).

The spelling of 2520126505 in words is "two billion, five hundred twenty million, one hundred twenty-six thousand, five hundred five".