125211231 has 8 divisors (see below), whose sum is σ = 185498160. Its totient is φ = 83474136.

The previous prime is 125211217. The next prime is 125211257. The reversal of 125211231 is 132112521.

It is not a de Polignac number, because 125211231 - 2⁵ = 125211199 is a prime.

It is a super-2 number, since 2×125211231² = 31355704737070722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125211211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2318700 + ... + 2318753.

It is an arithmetic number, because the mean of its divisors is an integer number (23187270).

Almost surely, 2^125211231 is an apocalyptic number.

125211231 is a deficient number, since it is larger than the sum of its proper divisors (60286929).

125211231 is an equidigital number, since it uses as much as digits as its factorization.

125211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637462 (or 4637456 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 125211231 is about 11189.7824375633. The cubic root of 125211231 is about 500.2814828384.

Adding to 125211231 its reverse (132112521), we get a palindrome (257323752).

The spelling of 125211231 in words is "one hundred twenty-five million, two hundred eleven thousand, two hundred thirty-one".