125512135 has 16 divisors (see below), whose sum is σ = 173376000. Its totient is φ = 85442976.

The previous prime is 125512091. The next prime is 125512147. The reversal of 125512135 is 531215521.

It is a cyclic number.

It is not a de Polignac number, because 125512135 - 2¹³ = 125503943 is a prime.

It is a congruent number.

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, 8035 + ... + 17764.

It is an arithmetic number, because the mean of its divisors is an integer number (10836000).

Almost surely, 2^125512135 is an apocalyptic number.

125512135 is a deficient number, since it is larger than the sum of its proper divisors (47863865).

125512135 is a wasteful number, since it uses less digits than its factorization.

125512135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25950.

The product of its digits is 1500, while the sum is 25.

The square root of 125512135 is about 11203.2198496682. The cubic root of 125512135 is about 500.6819162244.

Adding to 125512135 its reverse (531215521), we get a palindrome (656727656).

The spelling of 125512135 in words is "one hundred twenty-five million, five hundred twelve thousand, one hundred thirty-five".