111145525457 has 2 divisors, whose sum is σ = 111145525458. Its totient is φ = 111145525456.

The previous prime is 111145525453. The next prime is 111145525471. The reversal of 111145525457 is 754525541111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87621328081 + 23524197376 = 296009^2 + 153376^2 .

It is a cyclic number.

It is not a de Polignac number, because 111145525457 - 2² = 111145525453 is a prime.

It is a super-2 number, since 2×111145525457² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111145525453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572762728 + 55572762729.

It is an arithmetic number, because the mean of its divisors is an integer number (55572762729).

Almost surely, 2^111145525457 is an apocalyptic number.

It is an amenable number.

111145525457 is a deficient number, since it is larger than the sum of its proper divisors (1).

111145525457 is an equidigital number, since it uses as much as digits as its factorization.

111145525457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140000, while the sum is 41.

The spelling of 111145525457 in words is "one hundred eleven billion, one hundred forty-five million, five hundred twenty-five thousand, four hundred fifty-seven".