235131111225 has 30 divisors (see below), whose sum is σ = 435544101630. Its totient is φ = 125403258240.

The previous prime is 235131111223. The next prime is 235131111289. The reversal of 235131111225 is 522111131532.

235131111225 is a `hidden beast` number, since 2 + 3 + 513 + 11 + 112 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 79709184 + 235051402041 = 8928^2 + 484821^2 .

It is not a de Polignac number, because 235131111225 - 2¹ = 235131111223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (235131111223) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 58055040 + ... + 58059089.

It is an arithmetic number, because the mean of its divisors is an integer number (14518136721).

Almost surely, 2^235131111225 is an apocalyptic number.

235131111225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

235131111225 is a deficient number, since it is larger than the sum of its proper divisors (200412990405).

235131111225 is a wasteful number, since it uses less digits than its factorization.

235131111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116114151 (or 116114137 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

Adding to 235131111225 its reverse (522111131532), we get a palindrome (757242242757).

The spelling of 235131111225 in words is "two hundred thirty-five billion, one hundred thirty-one million, one hundred eleven thousand, two hundred twenty-five".