2111525417 has 2 divisors, whose sum is σ = 2111525418. Its totient is φ = 2111525416.

The previous prime is 2111525411. The next prime is 2111525483. The reversal of 2111525417 is 7145251112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2095716841 + 15808576 = 45779^2 + 3976^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111525417 - 2¹⁴ = 2111509033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111525417.

It is not a weakly prime, because it can be changed into another prime (2111525411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055762708 + 1055762709.

It is an arithmetic number, because the mean of its divisors is an integer number (1055762709).

Almost surely, 2^2111525417 is an apocalyptic number.

It is an amenable number.

2111525417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111525417 is an equidigital number, since it uses as much as digits as its factorization.

2111525417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

The square root of 2111525417 is about 45951.3374886956. The cubic root of 2111525417 is about 1282.9176237093.

Adding to 2111525417 its reverse (7145251112), we get a palindrome (9256776529).

The spelling of 2111525417 in words is "two billion, one hundred eleven million, five hundred twenty-five thousand, four hundred seventeen".