125135213 has 16 divisors (see below), whose sum is σ = 145731456. Its totient is φ = 105235200.

The previous prime is 125135207. The next prime is 125135233. The reversal of 125135213 is 312531521.

It is a happy number.

It is not a de Polignac number, because 125135213 - 2⁶ = 125135149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125135233) 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 15 ways as a sum of consecutive naturals, for example, 118538 + ... + 119588.

It is an arithmetic number, because the mean of its divisors is an integer number (9108216).

Almost surely, 2^125135213 is an apocalyptic number.

It is an amenable number.

125135213 is a deficient number, since it is larger than the sum of its proper divisors (20596243).

125135213 is a wasteful number, since it uses less digits than its factorization.

125135213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its digits is 900, while the sum is 23.

The square root of 125135213 is about 11186.3851623301. The cubic root of 125135213 is about 500.1802190344.

Adding to 125135213 its reverse (312531521), we get a palindrome (437666734).

The spelling of 125135213 in words is "one hundred twenty-five million, one hundred thirty-five thousand, two hundred thirteen".