125353521212 has 48 divisors (see below), whose sum is σ = 235909255680. Its totient is φ = 58094467200.

The previous prime is 125353521211. The next prime is 125353521229. The reversal of 125353521212 is 212125353521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125353521211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16752512 + ... + 16759992.

It is an arithmetic number, because the mean of its divisors is an integer number (4914776160).

Almost surely, 2^125353521212 is an apocalyptic number.

It is an amenable number.

125353521212 is a deficient number, since it is larger than the sum of its proper divisors (110555734468).

125353521212 is a wasteful number, since it uses less digits than its factorization.

125353521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242 (or 12240 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

Adding to 125353521212 its reverse (212125353521), we get a palindrome (337478874733).

The spelling of 125353521212 in words is "one hundred twenty-five billion, three hundred fifty-three million, five hundred twenty-one thousand, two hundred twelve".