125731212 has 24 divisors (see below), whose sum is σ = 293554800. Its totient is φ = 41884416.

The previous prime is 125731169. The next prime is 125731219. The reversal of 125731212 is 212137521.

It is not an unprimeable number, because it can be changed into a prime (125731219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33864 + ... + 37392.

It is an arithmetic number, because the mean of its divisors is an integer number (12231450).

Almost surely, 2^125731212 is an apocalyptic number.

125731212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125731212 is an abundant number, since it is smaller than the sum of its proper divisors (167823588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125731212 is a wasteful number, since it uses less digits than its factorization.

125731212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505 (or 6503 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 125731212 is about 11212.9929991952. The cubic root of 125731212 is about 500.9730544350.

Adding to 125731212 its reverse (212137521), we get a palindrome (337868733).

The spelling of 125731212 in words is "one hundred twenty-five million, seven hundred thirty-one thousand, two hundred twelve".