125531235 has 16 divisors (see below), whose sum is σ = 223166880. Its totient is φ = 66949920.

The previous prime is 125531221. The next prime is 125531251. The reversal of 125531235 is 532135521.

It is a happy number.

125531235 is a `hidden beast` number, since 125 + 531 + 2 + 3 + 5 = 666.

It is not a de Polignac number, because 125531235 - 2¹⁰ = 125530211 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 125531199 and 125531208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464796 + ... + 465065.

It is an arithmetic number, because the mean of its divisors is an integer number (13947930).

Almost surely, 2^125531235 is an apocalyptic number.

125531235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125531235 is a deficient number, since it is larger than the sum of its proper divisors (97635645).

125531235 is an equidigital number, since it uses as much as digits as its factorization.

125531235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929875 (or 929869 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 125531235 is about 11204.0722507488. The cubic root of 125531235 is about 500.7073122802.

Adding to 125531235 its reverse (532135521), we get a palindrome (657666756).

The spelling of 125531235 in words is "one hundred twenty-five million, five hundred thirty-one thousand, two hundred thirty-five".