2506012013 has 4 divisors (see below), whose sum is σ = 2506115388. Its totient is φ = 2505908640.

The previous prime is 2506012001. The next prime is 2506012021. The reversal of 2506012013 is 3102106052.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 557054404 + 1948957609 = 23602^2 + 44147^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506012013 - 2²⁶ = 2438903149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506012073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6545 + ... + 71097.

It is an arithmetic number, because the mean of its divisors is an integer number (626528847).

Almost surely, 2^2506012013 is an apocalyptic number.

It is an amenable number.

2506012013 is a deficient number, since it is larger than the sum of its proper divisors (103375).

2506012013 is an equidigital number, since it uses as much as digits as its factorization.

2506012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103374.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2506012013 is about 50060.0840290945. The cubic root of 2506012013 is about 1358.2958782986.

Adding to 2506012013 its reverse (3102106052), we get a palindrome (5608118065).

It can be divided in two parts, 25060 and 12013, that added together give a palindrome (37073).

The spelling of 2506012013 in words is "two billion, five hundred six million, twelve thousand, thirteen".