2113316525 has 24 divisors (see below), whose sum is σ = 2651902440. Its totient is φ = 1670492160.

The previous prime is 2113316509. The next prime is 2113316561. The reversal of 2113316525 is 5256133112.

It can be written as a sum of positive squares in 12 ways, for example, as 9351364 + 2103965161 = 3058^2 + 45869^2 .

It is not a de Polignac number, because 2113316525 - 2⁴ = 2113316509 is a prime.

It is a super-2 number, since 2×2113316525² = 8932213469676151250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1244477 + ... + 1246173.

It is an arithmetic number, because the mean of its divisors is an integer number (110495935).

Almost surely, 2^2113316525 is an apocalyptic number.

2113316525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2113316525 is a deficient number, since it is larger than the sum of its proper divisors (538585915).

2113316525 is a wasteful number, since it uses less digits than its factorization.

2113316525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2268 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 2113316525 is about 45970.8225399546. The cubic root of 2113316525 is about 1283.2802674784.

Adding to 2113316525 its reverse (5256133112), we get a palindrome (7369449637).

The spelling of 2113316525 in words is "two billion, one hundred thirteen million, three hundred sixteen thousand, five hundred twenty-five".