2516611525 has 12 divisors (see below), whose sum is σ = 3144423744. Its totient is φ = 1997918000.

The previous prime is 2516611523. The next prime is 2516611567. The reversal of 2516611525 is 5251166152.

It is not a de Polignac number, because 2516611525 - 2¹ = 2516611523 is a prime.

It is a super-4 number, since 4×2516611525⁴ (a number of 39 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516611523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380941 + ... + 387490.

It is an arithmetic number, because the mean of its divisors is an integer number (262035312).

Almost surely, 2^2516611525 is an apocalyptic number.

2516611525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2516611525 is a deficient number, since it is larger than the sum of its proper divisors (627812219).

2516611525 is a wasteful number, since it uses less digits than its factorization.

2516611525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768572 (or 768567 counting only the distinct ones).

The product of its digits is 18000, while the sum is 34.

The square root of 2516611525 is about 50165.8402202136. The cubic root of 2516611525 is about 1360.2082158498.

Adding to 2516611525 its reverse (5251166152), we get a palindrome (7767777677).

The spelling of 2516611525 in words is "two billion, five hundred sixteen million, six hundred eleven thousand, five hundred twenty-five".