125515550412 has 144 divisors (see below), whose sum is σ = 391413335040. Its totient is φ = 33119501184.

The previous prime is 125515550359. The next prime is 125515550417. The reversal of 125515550412 is 214055515521.

125515550412 is a `hidden beast` number, since 1 + 2 + 55 + 15 + 550 + 41 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (125515550417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205288 + ... + 541455.

It is an arithmetic number, because the mean of its divisors is an integer number (2718148160).

Almost surely, 2^125515550412 is an apocalyptic number.

125515550412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125515550412 is an abundant number, since it is smaller than the sum of its proper divisors (265897784628).

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

125515550412 is a wasteful number, since it uses less digits than its factorization.

125515550412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746812 (or 746807 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 125515550412 in words is "one hundred twenty-five billion, five hundred fifteen million, five hundred fifty thousand, four hundred twelve".