111442243025 has 12 divisors (see below), whose sum is σ = 138418330764. Its totient is φ = 89005440000.

The previous prime is 111442243007. The next prime is 111442243057. The reversal of 111442243025 is 520342244111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 12569100544 + 98873142481 = 112112^2 + 314441^2 .

It is not a de Polignac number, because 111442243025 - 2²⁶ = 111375134161 is a prime.

It is a super-2 number, since 2×111442243025² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3693536 + ... + 3723585.

It is an arithmetic number, because the mean of its divisors is an integer number (11534860897).

Almost surely, 2^111442243025 is an apocalyptic number.

It is an amenable number.

111442243025 is a deficient number, since it is larger than the sum of its proper divisors (26976087739).

111442243025 is an equidigital number, since it uses as much as digits as its factorization.

111442243025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7417732 (or 7417727 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 111442243025 its reverse (520342244111), we get a palindrome (631784487136).

The spelling of 111442243025 in words is "one hundred eleven billion, four hundred forty-two million, two hundred forty-three thousand, twenty-five".