2500507613 has 6 divisors (see below), whose sum is σ = 2526561306. Its totient is φ = 2474719872.

The previous prime is 2500507609. The next prime is 2500507621. The reversal of 2500507613 is 3167050052.

It can be written as a sum of positive squares in 3 ways, for example, as 227315929 + 2273191684 = 15077^2 + 47678^2 .

It is not a de Polignac number, because 2500507613 - 2² = 2500507609 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 (2500507643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123470 + ... + 142287.

It is an arithmetic number, because the mean of its divisors is an integer number (421093551).

Almost surely, 2^2500507613 is an apocalyptic number.

It is an amenable number.

2500507613 is a deficient number, since it is larger than the sum of its proper divisors (26053693).

2500507613 is an frugal number, since it uses more digits than its factorization.

2500507613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265951 (or 265854 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 2500507613 is about 50005.0758723552. The cubic root of 2500507613 is about 1357.3006603257.

Adding to 2500507613 its reverse (3167050052), we get a palindrome (5667557665).

The spelling of 2500507613 in words is "two billion, five hundred million, five hundred seven thousand, six hundred thirteen".