128180260625 has 20 divisors (see below), whose sum is σ = 160892497920. Its totient is φ = 102084258000.

The previous prime is 128180260597. The next prime is 128180260679. The reversal of 128180260625 is 526062081821.

It is a happy number.

It is not a de Polignac number, because 128180260625 - 2²² = 128176066321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 320465 + ... + 599214.

It is an arithmetic number, because the mean of its divisors is an integer number (8044624896).

Almost surely, 2^128180260625 is an apocalyptic number.

It is an amenable number.

128180260625 is a deficient number, since it is larger than the sum of its proper divisors (32712237295).

128180260625 is an frugal number, since it uses more digits than its factorization.

128180260625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919922 (or 919907 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 128180260625 in words is "one hundred twenty-eight billion, one hundred eighty million, two hundred sixty thousand, six hundred twenty-five".