2101312525 has 48 divisors (see below), whose sum is σ = 2967810048. Its totient is φ = 1464768000.

The previous prime is 2101312511. The next prime is 2101312529. The reversal of 2101312525 is 5252131012.

It is not a de Polignac number, because 2101312525 - 2²⁷ = 1967094797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101312496 and 2101312505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101312529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 410532 + ... + 415618.

It is an arithmetic number, because the mean of its divisors is an integer number (61829376).

Almost surely, 2^2101312525 is an apocalyptic number.

2101312525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2101312525 is a deficient number, since it is larger than the sum of its proper divisors (866497523).

2101312525 is a wasteful number, since it uses less digits than its factorization.

2101312525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182 (or 5177 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2101312525 is about 45840.0755344055. The cubic root of 2101312525 is about 1280.8459018317.

Adding to 2101312525 its reverse (5252131012), we get a palindrome (7353443537).

The spelling of 2101312525 in words is "two billion, one hundred one million, three hundred twelve thousand, five hundred twenty-five".