127689625 has 16 divisors (see below), whose sum is σ = 182123136. Its totient is φ = 87558000.

The previous prime is 127689623. The next prime is 127689641. The reversal of 127689625 is 526986721.

It is not a de Polignac number, because 127689625 - 2¹ = 127689623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127689623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72091 + ... + 73840.

It is an arithmetic number, because the mean of its divisors is an integer number (11382696).

Almost surely, 2^127689625 is an apocalyptic number.

It is an amenable number.

127689625 is a deficient number, since it is larger than the sum of its proper divisors (54433511).

127689625 is an equidigital number, since it uses as much as digits as its factorization.

127689625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145953 (or 145943 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 127689625 is about 11299.9834070675. The cubic root of 127689625 is about 503.5607486100.

The spelling of 127689625 in words is "one hundred twenty-seven million, six hundred eighty-nine thousand, six hundred twenty-five".