2111340231525 has 48 divisors (see below), whose sum is σ = 4044077404544. Its totient is φ = 951962388480.

The previous prime is 2111340231521. The next prime is 2111340231541. The reversal of 2111340231525 is 5251320431112.

It is a happy number.

It is not a de Polignac number, because 2111340231525 - 2² = 2111340231521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111340231492 and 2111340231501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111340231521) 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, 27506884 + ... + 27583533.

Almost surely, 2^{2111340231525} is an apocalyptic number.

2111340231525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111340231525 is a deficient number, since it is larger than the sum of its proper divisors (1932737173019).

2111340231525 is a wasteful number, since it uses less digits than its factorization.

2111340231525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55090510 (or 55090505 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 2111340231525 its reverse (5251320431112), we get a palindrome (7362660662637).

The spelling of 2111340231525 in words is "two trillion, one hundred eleven billion, three hundred forty million, two hundred thirty-one thousand, five hundred twenty-five".