125666282500 has 60 divisors (see below), whose sum is σ = 299789549136. Its totient is φ = 45696820000.

The previous prime is 125666282479. The next prime is 125666282501. The reversal of 125666282500 is 5282666521.

It is not an unprimeable number, because it can be changed into a prime (125666282501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2257342 + ... + 2312341.

Almost surely, 2^125666282500 is an apocalyptic number.

125666282500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125666282500 is an abundant number, since it is smaller than the sum of its proper divisors (174123266636).

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

125666282500 is a wasteful number, since it uses less digits than its factorization.

125666282500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569718 (or 4569701 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 125666282500 in words is "one hundred twenty-five billion, six hundred sixty-six million, two hundred eighty-two thousand, five hundred".