231105425 has 6 divisors (see below), whose sum is σ = 286570758. Its totient is φ = 184884320.

The previous prime is 231105409. The next prime is 231105461. The reversal of 231105425 is 524501132.

231105425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6345361 + 224760064 = 2519^2 + 14992^2 .

It is not a de Polignac number, because 231105425 - 2⁴ = 231105409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231105425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4622084 + ... + 4622133.

It is an arithmetic number, because the mean of its divisors is an integer number (47761793).

Almost surely, 2^231105425 is an apocalyptic number.

231105425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231105425 is a deficient number, since it is larger than the sum of its proper divisors (55465333).

231105425 is an equidigital number, since it uses as much as digits as its factorization.

231105425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244227 (or 9244222 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 231105425 is about 15202.1519858210. The cubic root of 231105425 is about 613.6725726150.

Adding to 231105425 its reverse (524501132), we get a palindrome (755606557).

The spelling of 231105425 in words is "two hundred thirty-one million, one hundred five thousand, four hundred twenty-five".