111161132025 has 24 divisors (see below), whose sum is σ = 183797132064. Its totient is φ = 59282476800.

The previous prime is 111161132011. The next prime is 111161132029. The reversal of 111161132025 is 520231161111.

It is not a de Polignac number, because 111161132025 - 2⁵ = 111161131993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111161131986 and 111161132004.

It is not an unprimeable number, because it can be changed into a prime (111161132029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1733790 + ... + 1796760.

It is an arithmetic number, because the mean of its divisors is an integer number (7658213836).

Almost surely, 2^111161132025 is an apocalyptic number.

111161132025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111161132025 is a deficient number, since it is larger than the sum of its proper divisors (72636000039).

111161132025 is a wasteful number, since it uses less digits than its factorization.

111161132025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86521 (or 86516 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 111161132025 its reverse (520231161111), we get a palindrome (631392293136).

The spelling of 111161132025 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred thirty-two thousand, twenty-five".