125131256 has 8 divisors (see below), whose sum is σ = 234621120. Its totient is φ = 62565624.

The previous prime is 125131213. The next prime is 125131289. The reversal of 125131256 is 652131521.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 7820696 + ... + 7820711.

It is an arithmetic number, because the mean of its divisors is an integer number (29327640).

Almost surely, 2^125131256 is an apocalyptic number.

It is an amenable number.

125131256 is a deficient number, since it is larger than the sum of its proper divisors (109489864).

125131256 is a wasteful number, since it uses less digits than its factorization.

125131256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15641413 (or 15641409 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 125131256 is about 11186.2082941451. The cubic root of 125131256 is about 500.1749467801.

Adding to 125131256 its reverse (652131521), we get a palindrome (777262777).

The spelling of 125131256 in words is "one hundred twenty-five million, one hundred thirty-one thousand, two hundred fifty-six".