125135005212 has 36 divisors (see below), whose sum is σ = 361501126896. Its totient is φ = 35752858560.

The previous prime is 125135005211. The next prime is 125135005291. The reversal of 125135005212 is 212500531521.

125135005212 is a `hidden beast` number, since 1 + 2 + 5 + 135 + 0 + 0 + 521 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125135005211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248283489 + ... + 248283992.

Almost surely, 2^125135005212 is an apocalyptic number.

125135005212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125135005212 is an abundant number, since it is smaller than the sum of its proper divisors (236366121684).

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

125135005212 is a wasteful number, since it uses less digits than its factorization.

125135005212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496567498 (or 496567493 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 125135005212 its reverse (212500531521), we get a palindrome (337635536733).

The spelling of 125135005212 in words is "one hundred twenty-five billion, one hundred thirty-five million, five thousand, two hundred twelve".