525442111 has 2 divisors, whose sum is σ = 525442112. Its totient is φ = 525442110.

The previous prime is 525442109. The next prime is 525442133. The reversal of 525442111 is 111244525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525442111 - 2¹ = 525442109 is a prime.

Together with 525442109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525448111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262721055 + 262721056.

It is an arithmetic number, because the mean of its divisors is an integer number (262721056).

Almost surely, 2^525442111 is an apocalyptic number.

525442111 is a deficient number, since it is larger than the sum of its proper divisors (1).

525442111 is an equidigital number, since it uses as much as digits as its factorization.

525442111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 25.

The square root of 525442111 is about 22922.5240974898. The cubic root of 525442111 is about 806.9407085407.

Adding to 525442111 its reverse (111244525), we get a palindrome (636686636).

The spelling of 525442111 in words is "five hundred twenty-five million, four hundred forty-two thousand, one hundred eleven".