125087021187 has 8 divisors (see below), whose sum is σ = 166787984400. Its totient is φ = 83388702720.

The previous prime is 125087021179. The next prime is 125087021209. The reversal of 125087021187 is 781120780521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125087021187 - 2³ = 125087021179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125087021687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548062 + ... + 741987.

It is an arithmetic number, because the mean of its divisors is an integer number (20848498050).

Almost surely, 2^125087021187 is an apocalyptic number.

125087021187 is a deficient number, since it is larger than the sum of its proper divisors (41700963213).

125087021187 is a wasteful number, since it uses less digits than its factorization.

125087021187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322373.

The product of its (nonzero) digits is 62720, while the sum is 42.

The spelling of 125087021187 in words is "one hundred twenty-five billion, eighty-seven million, twenty-one thousand, one hundred eighty-seven".