125551112112 has 60 divisors (see below), whose sum is σ = 372037493880. Its totient is φ = 39388583424.

The previous prime is 125551112101. The next prime is 125551112147. The reversal of 125551112112 is 211211155521.

125551112112 is a `hidden beast` number, since 1 + 25 + 5 + 511 + 12 + 112 = 666.

It is a super-3 number, since 3×125551112112³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25641162 + ... + 25646057.

It is an arithmetic number, because the mean of its divisors is an integer number (6200624898).

Almost surely, 2^125551112112 is an apocalyptic number.

125551112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125551112112 is an abundant number, since it is smaller than the sum of its proper divisors (246486381768).

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

125551112112 is a wasteful number, since it uses less digits than its factorization.

125551112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51287250 (or 51287241 counting only the distinct ones).

The product of its digits is 1000, while the sum is 27.

Adding to 125551112112 its reverse (211211155521), we get a palindrome (336762267633).

The spelling of 125551112112 in words is "one hundred twenty-five billion, five hundred fifty-one million, one hundred twelve thousand, one hundred twelve".